FXR Racing Youth Helium MX Pants. M-3 chassis design to give the rider class leading fit and mobility. Athletic fit. Main shell constructed of lightweight Omni-Stretch™ stretch fabric to offer high levels of flexibility, strength and ventilation. Rear yoke panel for improved fit with durable rear seat construction. Metal ratchet waist closure system offers a precise and secure fit. Slim fit knee design with added pre-curve provides less restriction and positive contact area. Dual-layer knee fabric with full-grain leather and abrasion-resistant inner fabric. Lightweight breathable mesh inserts on back of leg for added ventilation. Triple topstitching in critical areas for extra strength and durability. Adjustable hook-and-loop side waist system for personalized fit. Updated silicone printed inner elastic waist for extra grip and security.