The WCS Streem saddle features Ritchey's revolutionary patented Vector Wing technology, which helps eliminate congestion by more evenly dispersing pressure for all-day comfort wherever you pedal. The WCS Streem saddle has a flatter shape and low-profile design for flexible riders who like to move around the saddle on rides, and features a narrow carbon fiber shell for stiffness and light weight, hollow titanium alloy rails, lightweight foam padding and a microfiber cover. Specifications : Vector Wing design Dimensions : 278x132mm or 278x145mm Rails : titanium-alloy Rail dimensions : 7x7mm Shell : Nylon + carbon fiber Padding : superlight polyurethane foam Cover : microfiber Weight : 186g Color : black