Product description

These women's MTB undershorts are designed for riding in warm weather for up to 3 hours.

Elasticated, medium-firmness pad is both discreet and breathable for maximum comfort (absorbs vibrations and prevents rubbing). Waistband slims your waist for tummy-control

Sitting comfort

Ride comfortably for up to 3 hours with the ergonomic foam pad (13 mm).

Moisture management

Actively wicks away perspiration to the outer surface for quick drying

Stability

Large, shaping, elasticated waistband.

Stretch

Elastane in the fabric to guarantee ease of movement.

Compatibility

You just need one: these undershorts are compatible with our women\'s MTB shorts

Weight

150g in size M

ROCKRIDER

Women's Mountain Biking Undershorts Comfort 500 - Black

€25,99

4.55/5

323 reviews

4.55/5

323 reviews

MEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just below your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	XS	S	M	L	XL	2XL	3XL	4XL
Chest (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

BOTTOMS (SHORTS, PANTS, BOARDSHORTS)

Size	XS	S	M	L	XL	2XL	3XL
Hips (cm)	84-86	87-91	92-97	98-104	105-111	112-118	119-126

SWIMWEAR

Size	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

WOMEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Band size: Wrap a tape measure horizontally around your torso just below your breasts.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hip size: Wrap a tape measure horizontally around the largest part of your hips.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	3XS	2XS	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Chest (cm)	76-79	80-83	84-87	88-91	92-95	96-99	100-103	104-107	108-113	114-118	119-123

BOTTOMS (SHORTS, PANTS)

Size	3XS	2XS	XS	S	M	L	XL	2XL	3XL
Hips (cm)	81-85	86-90	91-96	97-102	103-108	109-114	115-120	121-128	129-136

BRA

Size	70A	70B	70C	70D	75A	75B	75C	75D	75E	80A	80B	80C	80D	80E	85B	85C	85D	85E
Chest size (cm)	80-86	80-86	80-86	80-86	86-92	86-92	86-92	86-92	86-92	92-100	92-100	92-100	92-100	92-100	100-106	100-106	100-106	100-106

SWIMWEAR

Size	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	90-93	94-97	98-101	102-105	106-109	110-113	114-119	120-125	126-131

KIDS SIZE GUIDE

How to measure:

Clothing size: Stand upright and place your bare heels flush against a wall. Measure the distance between the bottom of your foot and the top of your head.
Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

APPAREL

Age	3 Months	6-9 Months	9-12 Months	18 Months	2 Years	3 Years	4 Years	5 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Height (cm)	56-63	64-70	71-76	77-82	83-89	90-97	98-104	105-114	115-124	125-132	133-142	143-152	153-162

SHOES SIZE GUIDE

MEN SHOES

US Size	6.5	7	7.5	7.5	8	8.5	9	9.5	9.5	10	10.5	11	11.5	11.5	12	12.5	13
EU Size	39	39.5	40	40.5	41	41.5	42	42.5	43	43.5	44	44.5	45	45.5	46	46.5	47
Foot Length (in)	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2	10 ^1/2	10 ^3/4	10 ^3/4	11	11 ^1/4	11 ^1/4	11 ^1/2	11 ^1/2	11 ^1/2	11 ^3/4

WOMEN SHOES

US Size	4	4.5	5	5.5	5.5	6	6.5	7	7.5	7.5	8	8.5	9	9	9.5	10	10.5
EU Size	34	34.5	35	35.5	36	36.5	37	37.5	38	38.5	39	39.5	40	40.5	41	41.5	42
Foot Length (in)	8 ^1/2	8 ^1/2	8 ^1/2	8 ^3/4	8 ^3/4	9	9 ^1/4	9 ^1/4	9 ^1/2	9 ^1/2	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2

KIDS SHOES

US Size	4.5C	5C	5.5C	6C	7C	7.5C	8.5C	9C	10C	11.5C	12.5C	13C	1	2	2.5	3.5	4	5
EU Size	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37
Foot Length (in)	4 ^3/4	5	5 ^1/4	5 ^1/2	5 ^3/4	6	6 ^1/4	6 ^1/2	6 ^3/4	7	7 ^1/4	7 ^1/2	7 ^3/4	8	8 ^1/4	8 ^1/2	8 ^3/4	9 ^1/4

GEAR SIZE GUIDE

KIDS BIKES

Bike size	12"	14"	16"	20"	24"
Kids height (cm)	75-90	90-105	105-120	120-135	135-155
kids height (ft)	2'5'' - 3'	3' - 3'5''	3'5'' - 3'11''	3'11''- 4'5''	4'5'' - 5'1''

ROAD BIKES

Bike size	48 (XS)	51 (S)	54 (M)	57 (L)	60 (XL)
Your height (cm)	135-150	150-165	165-176	176-184	184-195

MOUNTAIN BIKES

Bike size	XS	S	M	L	XL
Your height (cm)	135-150	150-165	165-176	176-184	184-195

SKIS

Ski size	115-130	125-140	130-145	135-150	135-155	145-165	150-170	155-175	160-180	165-185	170-190	175-195	180-200
Your height (cm)	132	137	142	147	152	158	163	168	173	178	183	188	193

SNOWBOARDS

Snowboard size	128-136	133-141	139-147	144-152	149-157	154-162	159-167	160+	160+	160+
Your height (cm)	147	152	158	163	168	173	178	183	188	193
Your weight (lb)	50-55	55-60	60-65	65-70	70-75	75-80	80-85	85-90	90-95	95-100

ACCESSORIES SIZE GUIDE

KIDS GLOVES

Glove size	4 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Hand size (cm)	13.9-14.9	14.9-15.9	15.9-16.9	16.9-17.8	17.8-18.6	18.6-19.5

ADULT GLOVE

Glove size	XS	S	M	L	XL	2XL	3XL
Hand size (cm)	20.3-20.8	20.9-21.4	21.5-22.1	22.2-22.7	22.8-23.4	23.5-24	24.1-24.7

BOXING GLOVES

Glove size	6oz	8oz	10oz	12oz	14oz
Your weight (lb)	77-99	99-143	143-172	172-198	>198

Color : black

Size: L

Ref: 8667042

Variant

Only 1 unit left

Pickup available at Decathlon Larnaca Usually ready in 24 hours

Decathlon Larnaca

Pickup available, usually ready in 24 hours

6043
6043 Larnaca
Cyprus

100% Secure with Viva Wallet

Returns & Exchanges for up to 30 days.
For more information see here.

MEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just below your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	XS	S	M	L	XL	2XL	3XL	4XL
Chest (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

BOTTOMS (SHORTS, PANTS, BOARDSHORTS)

Size	XS	S	M	L	XL	2XL	3XL
Hips (cm)	84-86	87-91	92-97	98-104	105-111	112-118	119-126

SWIMWEAR

Size	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

WOMEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Band size: Wrap a tape measure horizontally around your torso just below your breasts.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hip size: Wrap a tape measure horizontally around the largest part of your hips.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	3XS	2XS	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Chest (cm)	76-79	80-83	84-87	88-91	92-95	96-99	100-103	104-107	108-113	114-118	119-123

BOTTOMS (SHORTS, PANTS)

Size	3XS	2XS	XS	S	M	L	XL	2XL	3XL
Hips (cm)	81-85	86-90	91-96	97-102	103-108	109-114	115-120	121-128	129-136

BRA

Size	70A	70B	70C	70D	75A	75B	75C	75D	75E	80A	80B	80C	80D	80E	85B	85C	85D	85E
Chest size (cm)	80-86	80-86	80-86	80-86	86-92	86-92	86-92	86-92	86-92	92-100	92-100	92-100	92-100	92-100	100-106	100-106	100-106	100-106

SWIMWEAR

Size	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	90-93	94-97	98-101	102-105	106-109	110-113	114-119	120-125	126-131

KIDS SIZE GUIDE

How to measure:

Clothing size: Stand upright and place your bare heels flush against a wall. Measure the distance between the bottom of your foot and the top of your head.
Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

APPAREL

Age	3 Months	6-9 Months	9-12 Months	18 Months	2 Years	3 Years	4 Years	5 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Height (cm)	56-63	64-70	71-76	77-82	83-89	90-97	98-104	105-114	115-124	125-132	133-142	143-152	153-162

SHOES SIZE GUIDE

MEN SHOES

US Size	6.5	7	7.5	7.5	8	8.5	9	9.5	9.5	10	10.5	11	11.5	11.5	12	12.5	13
EU Size	39	39.5	40	40.5	41	41.5	42	42.5	43	43.5	44	44.5	45	45.5	46	46.5	47
Foot Length (in)	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2	10 ^1/2	10 ^3/4	10 ^3/4	11	11 ^1/4	11 ^1/4	11 ^1/2	11 ^1/2	11 ^1/2	11 ^3/4

WOMEN SHOES

US Size	4	4.5	5	5.5	5.5	6	6.5	7	7.5	7.5	8	8.5	9	9	9.5	10	10.5
EU Size	34	34.5	35	35.5	36	36.5	37	37.5	38	38.5	39	39.5	40	40.5	41	41.5	42
Foot Length (in)	8 ^1/2	8 ^1/2	8 ^1/2	8 ^3/4	8 ^3/4	9	9 ^1/4	9 ^1/4	9 ^1/2	9 ^1/2	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2

KIDS SHOES

US Size	4.5C	5C	5.5C	6C	7C	7.5C	8.5C	9C	10C	11.5C	12.5C	13C	1	2	2.5	3.5	4	5
EU Size	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37
Foot Length (in)	4 ^3/4	5	5 ^1/4	5 ^1/2	5 ^3/4	6	6 ^1/4	6 ^1/2	6 ^3/4	7	7 ^1/4	7 ^1/2	7 ^3/4	8	8 ^1/4	8 ^1/2	8 ^3/4	9 ^1/4

GEAR SIZE GUIDE

KIDS BIKES

Bike size	12"	14"	16"	20"	24"
Kids height (cm)	75-90	90-105	105-120	120-135	135-155
kids height (ft)	2'5'' - 3'	3' - 3'5''	3'5'' - 3'11''	3'11''- 4'5''	4'5'' - 5'1''

ROAD BIKES

Bike size	48 (XS)	51 (S)	54 (M)	57 (L)	60 (XL)
Your height (cm)	135-150	150-165	165-176	176-184	184-195

MOUNTAIN BIKES

Bike size	XS	S	M	L	XL
Your height (cm)	135-150	150-165	165-176	176-184	184-195

SKIS

Ski size	115-130	125-140	130-145	135-150	135-155	145-165	150-170	155-175	160-180	165-185	170-190	175-195	180-200
Your height (cm)	132	137	142	147	152	158	163	168	173	178	183	188	193

SNOWBOARDS

Snowboard size	128-136	133-141	139-147	144-152	149-157	154-162	159-167	160+	160+	160+
Your height (cm)	147	152	158	163	168	173	178	183	188	193
Your weight (lb)	50-55	55-60	60-65	65-70	70-75	75-80	80-85	85-90	90-95	95-100

ACCESSORIES SIZE GUIDE

KIDS GLOVES

Glove size	4 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Hand size (cm)	13.9-14.9	14.9-15.9	15.9-16.9	16.9-17.8	17.8-18.6	18.6-19.5

ADULT GLOVE

Glove size	XS	S	M	L	XL	2XL	3XL
Hand size (cm)	20.3-20.8	20.9-21.4	21.5-22.1	22.2-22.7	22.8-23.4	23.5-24	24.1-24.7

BOXING GLOVES

Glove size	6oz	8oz	10oz	12oz	14oz
Your weight (lb)	77-99	99-143	143-172	172-198	>198

Product description

These women's MTB undershorts are designed for riding in warm weather for up to 3 hours.

Elasticated, medium-firmness pad is both discreet and breathable for maximum comfort (absorbs vibrations and prevents rubbing). Waistband slims your waist for tummy-control

Sitting comfort

Ride comfortably for up to 3 hours with the ergonomic foam pad (13 mm).

Moisture management

Actively wicks away perspiration to the outer surface for quick drying

Stability

Large, shaping, elasticated waistband.

Stretch

Elastane in the fabric to guarantee ease of movement.

Compatibility

You just need one: these undershorts are compatible with our women\'s MTB shorts

Weight

150g in size M

Description

These women's MTB undershorts are designed for riding in warm weather for up to 3 hours.

In a nutshell

Pad thickness: 13 mm Pad density: 100 kg/m3 Pad firmness: 25 KPa

UNDERSHORTS SUPPORT

We wanted to provide the support you need, even without straps. That's why these close-fitting undershorts have a wide elasticated waistband that adapts to you and stays in place, without requiring any adjustments.

A SECOND SKIN WITH COMFORT TO BOOT.

This pad is designed for regular users. The support foam is soft with medium firmness. Provides good user comfort and protects the cyclist's pressure zones for rides of up to 3 hours. Foam thickness: 13 mm Foam density: 100 kg/m3 Foam firmness: 25 KPa

SHORTS, UNDERSHORTS

Undershorts are to MTB what kilts are to Scotland: you wear them against your skin! To avoid chafing, we therefore recommend changing them and washing them as if they were underwear. And when you're riding, your shorts and undershorts should never be attached. Why? Because each has their own role to play: - The undershorts stay in place for comfort and support. - The shorts move with you for better freedom as you cycle

CARE INSTRUCTIONS

You can find detailed info on looking after your mountain bike clothing on our website

Product tests

Our team of product designers based at the B'Twin Village in Lille is continuously working to make cycling more comfortable for our users. Our obsession is to create products that meet the specific cycling needs of our users and eliminate hindrances to a good cycling experience.

Elasticated, medium-firmness pad is both discreet and breathable for maximum comfort (absorbs vibrations and prevents rubbing). Waistband slims your waist for tummy-control

Sitting comfort

Ride comfortably for up to 3 hours with the ergonomic foam pad (13 mm).

Moisture management

Actively wicks away perspiration to the outer surface for quick drying

Stability

Large, shaping, elasticated waistband.

Stretch

Elastane in the fabric to guarantee ease of movement.

Compatibility

You just need one: these undershorts are compatible with our women's MTB shorts

Weight

150g in size M

These women's MTB undershorts are designed for riding in warm weather for up to 3 hours.

In a nutshell

Pad thickness: 13 mm Pad density: 100 kg/m3 Pad firmness: 25 KPa

UNDERSHORTS SUPPORT

A SECOND SKIN WITH COMFORT TO BOOT.

SHORTS, UNDERSHORTS

CARE INSTRUCTIONS

You can find detailed info on looking after your mountain bike clothing on our website

Product tests

Elasticated, medium-firmness pad is both discreet and breathable for maximum comfort (absorbs vibrations and prevents rubbing). Waistband slims your waist for tummy-control

Sitting comfort

Ride comfortably for up to 3 hours with the ergonomic foam pad (13 mm).

Moisture management

Actively wicks away perspiration to the outer surface for quick drying

Stability

Large, shaping, elasticated waistband.

Stretch

Elastane in the fabric to guarantee ease of movement.

Compatibility

You just need one: these undershorts are compatible with our women's MTB shorts

Weight

150g in size M

These women's MTB undershorts are designed for riding in warm weather for up to 3 hours.

4.55/5

323 reviews

Your reviews

Great

alyn | 2025-08-26GMT+000010:48:440 |

Cycling undershorts

Good, comfortable undershorts

Robert | 2023-09-22GMT+000009:45:110 |

Comfy cycle shorts

Great, comfortable just sit a little lower on me than I personally prefer

Claire | 2023-08-31GMT+000014:00:330 |

We Had a Makeover

70% off all selected products

Product description

ROCKRIDER

Women's Mountain Biking Undershorts Comfort 500 - Black

MEN SIZE GUIDE

WOMEN SIZE GUIDE

KIDS SIZE GUIDE

SHOES SIZE GUIDE

GEAR SIZE GUIDE

ACCESSORIES SIZE GUIDE

MEN SIZE GUIDE

WOMEN SIZE GUIDE

KIDS SIZE GUIDE

SHOES SIZE GUIDE

GEAR SIZE GUIDE

ACCESSORIES SIZE GUIDE

MEN SIZE GUIDE

WOMEN SIZE GUIDE

KIDS SIZE GUIDE

SHOES SIZE GUIDE

GEAR SIZE GUIDE

ACCESSORIES SIZE GUIDE

MEN SIZE GUIDE

WOMEN SIZE GUIDE

KIDS SIZE GUIDE

SHOES SIZE GUIDE

GEAR SIZE GUIDE

ACCESSORIES SIZE GUIDE

Product description

In a nutshell

UNDERSHORTS SUPPORT

A SECOND SKIN WITH COMFORT TO BOOT.

SHORTS, UNDERSHORTS

CARE INSTRUCTIONS

Product tests

Sitting comfort

Moisture management

Stability

Stretch

Compatibility

Weight

In a nutshell

UNDERSHORTS SUPPORT

A SECOND SKIN WITH COMFORT TO BOOT.

SHORTS, UNDERSHORTS

CARE INSTRUCTIONS

Product tests

Sitting comfort

Moisture management

Stability

Stretch

Compatibility

Weight

Your reviews

Great

Cycling undershorts

Comfy cycle shorts