Ultimate Performance Tee

Name: Ultimate Performance Tee
Brand: Gymbum UK
SKU: 4958107_17522
Price: 19.99 GBP
Availability: InStock

Engineered with purpose. Worn with confidence

£19.99 GBP

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Shipped by GymBum UK

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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.

Say hello to your new performance powerhouse – the Ultimate Performance Tee. This isn't just another gym shirt; it's your secret weapon for looking sharp while absolutely crushing your fitness goals. Built from 100% breathable polyester mesh, it keeps you cool and comfortable whether you're sprinting through HIIT sessions or just vibing in casual mode. The relaxed fit gives you total freedom to move without any restrictions, while the extended length ensures you've got the coverage you need for all your favourite activities. At a featherweight 4.13 oz./yd², you'll barely notice you're wearing it – until you realize how incredibly durable it is. Side-seamed construction reinforces every seam for long-lasting wear, and the reinforced collar binding keeps everything looking polished and put-together, wash after wash. Those short raglan sleeves are designed for maximum shoulder mobility, so you can reach, stretch, and lift without any fabric getting in your way. The classic round neckline is timeless enough to pair with anything in your wardrobe. Whether you're heading to the gym, the office, or just living your best life, this tee delivers style, comfort, and performance in one seriously impressive package.

Size guide

	LENGTH (inches)	CHEST (inches)
S	27 ½	31-34
M	28 ⅜	35-38
L	29 ⅛	39-41
XL	29 ⅞	42-45
2XL	30 ¾	46-48

	LENGTH (cm)	CHEST (cm)
S	70	78.7-86.4
M	72	89-96.5
L	74	99-104.1
XL	76	106.7-114.3
2XL	78	116.8-122

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Ultimate Performance Tee