SunyouPU leather Waterproof BaseCamp Mountain Road MTB Bike Bicycle Cycling Hollow Saddle Bike Seats Cushion Suitable for road bikes, mountain bikes, fixed gear bicycle, etc. Based on ergonomic, helping relieve the pressure and discomfort in long journey. Made of weatherproof PU leather cover, elastic sponge pad and high-strength stainless steel rack. Good shock-absorbing effect. Hollow design for ventilation and heat dissipation.