Advanced Shorts Liner Design: The Pro-X3 Bike Liner incorporates SmartFlex technology, ensuring flexible biker shorts liner that harden on impact for superior comfort and protection Padded Apparel for Biking: Experience the freedom of movement with ventilated SmartFlex hip pads designed for airflow, offering flexible and protective short liners that are cool and comfortable Endurance-Ready Protective Gear: Tackle long rides with a 4+ hour chamois in this MTB shorts liner, which provide anti-chafe comfort and moisture-wicking capabilities for extended adventures Washable Shorts Liner for Athletes: G-Form's bike shorts liner features waterproof SmartFlex pads, making them machine washable for hassle-free maintenance and consistent performance Protective Gear for Athletes: G-Form provides innovative protection using advanced technology and materials so you can have the confidence to push your limits and achieve your personal best