cool,breathable,3D structure speed reach 30km, air flow through the body cool & brethable,10mm spacer channel,cushioning, 100% ... .3, strong cushion support the body, and leave the channel for air flow.4, 100% Polyester materail ,100% Friendly, same as the ... readh 20 miles per hour, you will feel big air flow under ass. Which will make the cool and dry. motorcycle ...