Cold, wet, hard bike seats are an unnecessary pain. Riding every day, often in bad weather it pays to make riding time as comfortable as possible. Woolen, lockable, and waterproof all in one? We made it happen for us, for our friends, neighbors and now to lands beyond. Born in Amsterdam, now on bike seats from Portugal to Austria, Sweden to Italy. Our bike seat covers are ideal for all weather conditions. Forget cold, wet, icy seats in winter and hot, sweaty, wet seats in summer. Sunny Bum is the love bridge for bike and bum.