8.50 FightGearLab / Gloves / Hayabusa S4 Leather

S4 Leather
Updated: April 2026
$99.99
Prices vary by retailer and size.
Performance Metrics
Scores are based on structured evaluation across 5 performance metrics. Learn more
Bottom Line
Genuine leather upgrade of the entry-level S4. Same padding and wrist structure, real leather shell, $99.99. The right step up before T3 territory.
Strong price-to-performance for its tier.
Where to Buy
Intended Use
Who This Glove Is For
The Hayabusa S4 Leather is the genuine leather upgrade of the entry-level S4 line. Same single-strap velcro closure, same injection-molded foam padding, same single-splint wrist support — but the shell is 100% genuine leather instead of engineered PU. The $20 price bump unlocks meaningful long-term durability for fighters who train regularly. For beginners on a slightly larger budget or fighters who want a leather Hayabusa glove without going up to T3 LX or Pro pricing, this is the bridge product. Pre-curved interior and ergonomic thumb positioning carry over from the standard S4. 7 colorways available.
Who It's Not For
- Sparring (basic wrist structure unchanged)
- Buyers wanting multi-layered foam
Pros & Cons
Pros
- 100% genuine leather construction
- Pre-curved interior for natural fit
- Microfiber thumb for sweat management
- Foam grip bar for fist positioning
- Solid value at $99.99 for real leather
- 7 colorways
Cons
- Single-splint wrist support — same as base S4
- Injection-molded foam — same as base S4
- Single-strap closure (no Dual-X)
- Not a sparring glove despite the leather upgrade
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Where to Buy
Prices vary by retailer and size. FightGearLab may earn a commission.
Product Videos & Independent Reviews
Video reviews coming soon.