Product Features: High Density Sponge:High density foam inside providing comfortable support and reducing pressure on the pubic Iron Bow Resin Coating:The surface of the bow is coated with black resin to protect it from rusting Breathable Comfortable:The middle groove design of the seat cushion allows for free air circulation rapid heat dissipation and breathability PU Leather:The surface PU waterproof material is not afraid of rain and it dries quickly with a wipe Lightweight Design:Lightweight design no burden on cycling