Breathable & ComfortableMade of 85%Polyester & 15%Spandex,breathable mesh fabric on the main body prevents overheating and improves air permeability to keep you cool and dry; Flexible & LightweightSmooth elastic fabric lies soft against skin and offers 4-way stretch,wide waistband provides comfort without extra pressure. Ergonomic 3D Sponge Pad3D anatomical and perforated layer design for chamois with high-density sponge,absorb shock and reduce the humid,provide enduring support and comfort on long rides. Best for BikingThese biking underwear shorts are designed specially for people who love riding bikes to increase ride comfort,perfect for mountain biking,road biking,spinning,motorbike,virtual bike training,etc.