What is the difference between the Fusion Rash Guard and the Apex Rash Guard?

The Fusion Rash Guard is Hayabusa's mid-range performance compression top with four-way stretch fabric and flatlock seams — built for daily MMA and no-gi training at a competitive price point. The Apex Long Sleeve Rash Guard is the premium tier with enhanced muscle support compression and a wider size range (up to 3XL). Both are appropriate for training and competition; the Apex is the premium option for advanced practitioners who prioritise maximum compression performance.

Short sleeve vs long sleeve — which is better for grappling?

Long sleeve provides complete arm coverage, which significantly reduces mat burns and forearm abrasions during extended ground work — particularly useful for guard players and those who spend significant time on the mat. Short sleeve is preferred in warmer gyms, for stand-up focused training, or by fighters who find sleeve length restrictive during certain guard positions. Both use the same fabric performance.

Can I wear the Fusion Rash Guard under a gi?

Yes — rash guards are commonly worn under gi tops for BJJ, providing a comfortable, hygienic layer that reduces skin irritation from gi fabric during drilling and rolling. The short sleeve profile of the Fusion fits cleanly under a gi jacket without bunching at the elbows.

How do I care for this rash guard?

Machine wash cold on a gentle cycle, inside out to protect the print. Air dry or tumble dry on low heat — high heat degrades spandex and elasticity over time. Do not iron. Wash after every session — rash guards that sit in a training bag between sessions develop bacteria and odour much faster than those washed regularly.

Hayabusa Fusion Short Sleeve Rash Guard – MMA & BJJ Compression Performance Top

Hayabusa

Hayabusa Fusion Short Sleeve Rash Guard – MMA & BJJ Compression Performance Top

$54.99 USD $71.95 USD

Size Small Medium Large X-Large 2X-Large

Color Black/Purple Blue/Green Grey/Aqua

Pickup available at 1320 Farmville Road

Usually ready in 24 hours

Reliable shipping

Flexible returns

The Hayabusa Fusion Short Sleeve Rash Guard is a performance compression top built for MMA training and no-gi BJJ. The moisture-wicking four-way stretch fabric keeps you cool and covered during striking, clinch work, and ground sessions — while the flatlock stitching eliminates the skin abrasion that standard seams cause during extended rolling.

Features

Four-way stretch compression fabric for unrestricted movement across all MMA training ranges
Flatlock seams eliminate friction and skin irritation during extended rolling and sparring
Moisture-wicking quick-dry construction manages sweat and maintains comfort
Reinforced collar and cuffs hold their shape under grip and clinch pressure
Anti-microbial treatment controls odour between washes
Available in short sleeve for ventilated warm-weather or high-intensity training

Available in Black/Purple, Blue/Green, and Grey/Aqua in sizes S–2XL.

Frequently Asked Questions

What is the difference between the Fusion Rash Guard and the Apex Rash Guard?: The Fusion Rash Guard is Hayabusa's mid-range performance compression top with four-way stretch fabric and flatlock seams — built for daily MMA and no-gi training at a competitive price point. The Apex Long Sleeve Rash Guard is the premium tier with enhanced muscle support compression and a wider size range (up to 3XL). Both are appropriate for training and competition; the Apex is the premium option for advanced practitioners who prioritise maximum compression performance.
Short sleeve vs long sleeve — which is better for grappling?: Long sleeve provides complete arm coverage, which significantly reduces mat burns and forearm abrasions during extended ground work — particularly useful for guard players and those who spend significant time on the mat. Short sleeve is preferred in warmer gyms, for stand-up focused training, or by fighters who find sleeve length restrictive during certain guard positions. Both use the same fabric performance.
Can I wear the Fusion Rash Guard under a gi?: Yes — rash guards are commonly worn under gi tops for BJJ, providing a comfortable, hygienic layer that reduces skin irritation from gi fabric during drilling and rolling. The short sleeve profile of the Fusion fits cleanly under a gi jacket without bunching at the elbows.
How do I care for this rash guard?: Machine wash cold on a gentle cycle, inside out to protect the print. Air dry or tumble dry on low heat — high heat degrades spandex and elasticity over time. Do not iron. Wash after every session — rash guards that sit in a training bag between sessions develop bacteria and odour much faster than those washed regularly.