GymBumUK Men's BlackSlash Baselayer

Name: GymBumUK Men's BlackSlash Baselayer
Brand: Gymbum UK
SKU: 9425389_9144
Price: 29.99 GBP
Availability: InStock

Engineered with purpose. Worn with confidence

£29.99 GBP

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GymBum UK Size Guide

🧡 GymBum UK Sports Bra Size Guide

Size	Chest (inches)	Underbust (inches)
XS	33 ⅛	27 ½
S	34 ⅝	29 ⅛
M	36 ¼	30 ¾
L	39 ⅜	33 ½
XL	42 ½	36 ¼
2XL	45 ⅝	39
3XL	48 ⅞	41 ¾

🧍♀️ Women’s Activewear

UK	US	EU	Asian	Tops / Bras	Leggings / Shorts	Trainers (UK/EU/US)
4–6	0–2	32–34	S	XS	XS	3.5 / 36 / 5
8–10	4–6	36–38	M	S	S	4–5.5 / 37–38 / 6–7.5
12–14	8–10	40–42	L	M	M	6–7.5 / 39–40 / 8–9.5
16	12	44	XL	L	L	8–8.5 / 41–42 / 10–11
18	14	46	XXL	XL	XL	9–9.5 / 43–44 / 11.5–12

🧍♂️ Men’s Activewear

UK	US	EU	Asian	Tops / Hoodies	Shorts / Joggers	Trainers (UK/EU/US)
S	S	46	M	36–38" Chest	30" Waist	6–7 / 39–40 / 7–8
M	M	48–50	L	38–40" Chest	32–34" Waist	8–9 / 41–42 / 9–10
L	L	52	XL	42–44" Chest	36" Waist	10 / 43–44 / 11
XL	XL	54	XXL	46–48" Chest	38" Waist	11 / 45–46 / 12
XXL	XXL	56	3XL	50–52" Chest	40–42" Waist	12–13 / 47–48 / 13–14

🧵 Fit Notes

Asian sizes typically run 1–2 sizes smaller than UK sizing.
For a performance fit, choose your regular UK size.
For a relaxed fit, size up.
Measurements are approximate and may vary slightly by fabric and style.

Fit Tip: Some of our activewear follows Asian sizing (approx. 1–2 sizes smaller than UK). Refer to the GymBum Size Guide for accurate conversions.

Power through your day in the Men's BlackSlash Baselayer—leggings that refuse to hold you back. Made from 82% polyester and 18% spandex, the ultra-soft four-way stretch fabric moves in every direction, adapting to your body's demands. A fitted silhouette paired with a strategic front gusset gives you support without restriction, while the elastic waistband stays put through intense sessions. Moisture-wicking technology keeps you fresh from the gym to the streets, and flatseam construction means zero irritation. Whether you're training hard, running fast, or just living your best life, these leggings deliver the comfort and performance you deserve.

Size guide

	WAIST (inches)	HIPS (inches)
XS	29 ⅞	37
S	31 ½	38 ⅝
M	33 ⅛	40 ⅛
L	36 ¼	43 ¼
XL	39 ⅜	46 ½
2XL	42 ½	49 ⅝
3XL	45 ⅝	52 ¾

	WAIST (cm)	HIPS (cm)
XS	76	94
S	80	98
M	84	102
L	92	110
XL	100	118
2XL	108	126
3XL	116	134

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GymBumUK Men's BlackSlash Baselayer