Hayabusa Weld3 Official MMA Fight Shorts - Black First and only welded fight short developed by Hayabusa. Ultrasonic Weld3 Technology delivers indestructible strength and zero abrasion. Patent-Pending revolutionary design. Flat-Welded seams and sleek hem finish for maximum comfort. Silicon non-slip waist ensures shorts shirts stay securely in place. Fiber-Fused graphics for extreme durability.