The specialized rbx expert rain pant is an excellent pair of waterproof trousers which have been specifically designed for cycling these rain pants have been constructed from specialized39s platino 105 a 3 layer fabric with a waterproof breathable membrane so your legs will be protected in a downpour and the great breathability will ensure your legs don39t overheat the platino fabric is also elasticated for maximum freedom of movement and highly efficient pedalling these waterproof