RDX Rash Guard BJJ

Name: RDX Rash Guard BJJ
Brand: GymBum UK
SKU: B07QZWRT51
Price: 29.99 GBP
Availability: InStock

Engineered with purpose. Worn with confidence

£29.99 GBP

~~£0.00 GBP~~ £29.99 GBP

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Designed for performance

Color

Black Full Sleeve Black Half Sleeve

Size chart

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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.

The RDX Rash Guard BJJ is your go-to compression companion for serious athletes who refuse to compromise on performance. Crafted from a premium polyester and spandex blend, this thermal compression base layer delivers durability that laughs in the face of intense training sessions—whether you're rolling on the mat, throwing strikes, or pushing through high-intensity workouts. What makes this rash guard a game-changer? The 4-way stretchability keeps you moving freely through every athletic move, while extension panels in the underarm sections give you that extra breathing room when you need it most.

The wrinkle-resistant fabric bounces back no matter what you throw at it, making it perfect for BJJ, Muay Thai, No-Gi, basketball, football, or any sport demanding maximum mobility. Comfort is built into every detail. Flatlocked seams eliminate irritation during those gruelling sessions, and the lightweight crew neckline keeps things streamlined without sacrificing support. The sweat-wicking, breathable technology works overtime to keep you dry and cool, maintaining optimal temperature whether you're grappling, training, or crushing your fitness goals.

Available in both full-sleeved and half-sleeved options, this compression shirt adapts to your needs. Hand wash only to maintain its integrity. Perfect for runners, cyclists, yogis, and anyone serious about their training. Note: Small size recommended for ages up to 14 years.