Alpinestars class-leading Racer apparel collection has undergone a design evolution with the introduction of the new Racer Tech line. The Racer Tech Atomic Pant features a new advanced flexible design construction with 4-way stretch fabric and heavy poly-fabric main shell offering high levels of flexibility and durability. A leather leg panel protects against heat while the innovative 3D knee construction gives plenty of freedom of movement for the legs. Features 3D injection molded rubber logos for durability. Ratchet closure with dual waist adjustment pull-tabs for safe, personalized fit. Convenient interior hip pocket for key/coin storage. Construction Innovative, strategically positioned four-way stretch panels for freedom of movement and riding fit. Pre-curved, ergonomic leg construction for improved performance in the riding position. Heavy poly-fabric reinforcement on the seat area and inner leg panels provides superior abrasion resistance. Includes perforated foam hip pads for fit, comfort and breathability. Leather reinforced inner-leg panels for heat resistance, grip and comfort. Innovative 3D knee construction and expansion panel designed to accommodate knee protectors.