VINQLIQ Air Cushion Bike Bicycle Saddle Seat Innovative Design Extra Wide Gel with Softness Adjustable Self Inflating Air Bag Unisex for Comfortable Riding TPU Lycra Fabric ADJUSTABLE WITH ATP SYSTEM - The air bag in the saddle can be inflated or deflated by the built-in ATP (Air Technology with PUMP) System. You can adjust the amount of air in your saddle until you feel most comfortable. SMOOTH AND COMFORTABLE - Chrome coil Frame and thick Casting Polyurethane spring suspension helps smooth out bumps. BREATHABLE AND WEATHER RESISTANT - The fabric cover is made from Nylon and Lycra with mesh on the side which is stretchable, breathable and weather resistant. EASY TO INSTALL - Universal design installs on any standard seat post. Fits for mountain bike, road bike, folding bike; perfect for both double track seat tube and clip seat tube. BUY WITH CONFIDENCE - We stand behind our products and provide a 30-daymoney-backguaranteeforanyreasonand 12-monthwarrantyforquality-relatedissues.