Venum's men's rashguards — long-sleeve and short-sleeve — share a single compression-fit table. The cut is deliberately tight to deliver a second-skin feel that locks the muscles in place during BJJ, MMA, no-gi grappling and rolling. The sleeves and torso are cut from the same stretch panels, so the same chart applies whether you're picking up a long-sleeve rashguard, a short-sleeve compression top or a tank-style cross-training piece from the Venum collection.
Fit tip: Rashguards are compression apparel — follow the size matching your measurements for that locked-in feel. For a lighter compression, choose one size above. If you're between two sizes, favour the chest measurement as your reference point.
| Size | Chest | Waist | Front Length | Sleeve Length |
|---|---|---|---|---|
| XXS | 34.6 - 35.8 in | 33.4 - 34.6 in | 19.3 in | 25.2 in |
| XS | 36.2 - 37.4 in | 35 - 36.2 in | 19.7 in | 26 in |
| S | 37.8 - 39 in | 36.6 - 38.2 in | 20.1 in | 26.8 in |
| M | 39.4 - 40.6 in | 38.6 - 39.5 in | 20.9 in | 27.6 in |
| L | 40.9 - 42.1 in | 40.2 - 41.3 in | 21.5 in | 28.3 in |
| XL | 42.5 - 45.3 in | 41.7 - 42.9 in | 22 in | 28.7 in |
| XXL | 45.7 - 49.2 in | 43.3 - 44.5 in | 22.6 in | 29.5 in |
Venum's published values are in inches — multiply by 2.54 to convert to cm if needed.
How to measure
- Chest: Measure around the fullest part of your chest, keeping the tape horizontal under the armpits.
- Waist: Measure at the narrowest point of your natural waistline, just above the hip bones.
- Front length: From the top of the shoulder seam down to the bottom hem.
- Sleeve length: From the centre back of the neck, across the shoulder, and down to the wrist with the arm slightly bent.
Not sure which size to pick? Sizing rashguards is forgiving thanks to the stretch fabric — if you're between sizes, go down for tighter compression or up for a more relaxed feel. We offer 30-day returns on unworn items with tags attached. Browse the full Venum collection for matching shorts, spats and compression gear.
Designed specifically for athletes and fighters, the Venum BioMecha Rashguard is the ultimate companion for grappling, BJJ, and MMA. This high-performance rashguard offers an unbeatable combination of protection, mobility, and comfort.
Key Features:
- Unparalleled Protection: With its compressive, long-sleeved design, the BioMecha Rashguard acts as a shield against rashes, burns, and scrapes, ensuring your skin stays safe and protected during intense training sessions.
- Enhanced Freedom of Movement: Experience a true "second skin" effect with the fabric's remarkable elasticity, providing unrestricted mobility. Whether you're executing complex techniques or engaging in rapid movements, this rashguard moves with you, allowing you to perform at your best.
- Stay Dry and Comfortable: Featuring strategically placed mesh inserts, the BioMecha Rashguard facilitates rapid evacuation of perspiration, keeping you dry and comfortable throughout your training. Say goodbye to distractions caused by excessive moisture and maintain focus on your goals.
- Secure Fit: Elasticated bands around the waist ensure a secure and snug fit, preventing the rashguard from riding up during vigorous training sessions. Whether you're wearing it under a Vale Tudo or with spats, you can trust that the BioMecha Rashguard will stay in place, providing consistent coverage and protection.
- Inspired by Power and Speed: The Venum BioMecha collection draws inspiration from the awe-inspiring mechanics of Mecha exoskeletons. Its dynamic parallel lines represent augmented strength and speed, making you feel empowered and ready to conquer any challenge.
Size Guide:
Donatello is 185cm/6'1" and wears a size M
Chest: 3.3 inches
Size: 3.1 inches
Hip: 3.2 inches
Weight: 207 lb
Remember, greatness awaits those who are willing to push their limits. Get your Venum BioMecha Rashguard today and elevate your training to new heights!
Manufactured by: Venum
Product Type: Rash Guards
Gender: Mens
Material: Polyester
Origin: China
£4.99 FREE - Spend over £75 (*Mainland UK only) - Delivered within 3 working days - Estimated delivery date provided at checkout - Tracking number available once shipped
£9.99 - Delivered next working day - Estimated delivery date provided at checkout - Tracking number available once shipped - Subject to order cut off times. *Order before 12pm.
£23.99 - Delivered within 4 working days - Estimated delivery date provided at checkout - Tracking number available once shipped - Destinations include Northern Ireland, Scottish Highlands and Channel Islands.
from £20 - For orders over 100cm in length or 30kg in weight. - Oversized items are not eligible for free delivery - Total cost calculated at checkout. Please check dimensions and weight are suitable before completing your order to save any unexpected returns costs.
Easy Returns available on all UK mainland orders via our returns centre - Please complete the returns form in full and send your order back to us via your selected method. - Returns will be processed within 7-14 days of receipt - If your order is oversized please contact us to arrange an alternative returns method. For more information view our returns policy.
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