Selle italia flite friction free saddlethe excelllent combination of comfort and aesthetics is what distinguishes this timeless legend from so many other saddles thanks to the valuable ergonomic contributiojn of idmatch its an even better buy features the wider and flat seating surface makes for a better overall distribution of pressue thin padding adds to the comfort for an ultra slim profile reinforced polyamide shell specifications use roadoffroad size 145 x 275mm wxl rail titaniu