Oni Mask Long Sleeve Rashguard

Control the Moment. Stay Heavy. Inspired by the legendary Oni of Japanese folklore—symbols of power, dominance, and fearlessness—the Oni Mask Rash Guard represents the art of pressure. It is built for grapplers who don't rush; they control the pace, break posture, and hold position. On the back, the 練習 (Renshuu) kanji serves as a reminder of the quiet discipline that transforms effort into mastery.

Dominance earned through patience and presence.

Built for Performance Under Pressure

The long-sleeve construction acts as a durable second skin, providing full-arm protection against mat burn and friction. Designed to move through the grind session after session, this rash guard ensures you stay focused on the round, not your gear.

• Locked-In Compression: Stabilizes muscles and reduces fatigue during high-intensity scrambles and heavy pinning.

• 4-Way Stretch Fabric: Engineered for zero-restriction movement. Your gear follows your intent in every direction.

• Extended Silhouette: A longer cut in the body and sleeves designed specifically to stay in place and prevent riding up during training.

• Total Mat Protection: Full-sleeve coverage to maintain hygiene and shield your skin through the longest sessions.

Technical Specifications

• High-Density Fabric: 225–230 g/m² performance weight—a substantial feel with elite "snap-back" recovery and long-term durability.

• Reinforced Flatlock Seams: Low-profile, high-strength stitching that eliminates chafing and survives extreme tension.

• Sublimated Graphics: The Oni artwork is fused into the fibers. It will never crack, peel, or fade, no matter how much friction you apply.

• Integrated Protection: UPF 50+ rating for indoor and outdoor training with superior moisture-wicking technology.

The Renshuu Process

In line with our commitment to intentionality and zero-waste quality, this piece is custom-produced specifically for you.

• Bespoke Production: To ensure maximum detail and durability, we don't do mass-produced overstock. Each item is printed, cut, and hand-sewn to meet our technical standards.

• Fulfillment: Most orders are prepared and shipped within 3–5 business days.

• Quality First: By producing on-demand, we reduce environmental waste while maintaining a higher standard of gear for the Republic.

Fit & Feel: True compression fit. If you are between sizes or prefer a less restrictive feel, we recommend sizing up.

Control. Mastery. Dominance.