Selle italia sp 01 boost tekno superflow saddleperfect for racing, this road bike saddle features a tough carbon rail construction, which means that you'll benefit from its incredible strength to weight ratio. Selle italia has also kitted out this model with a carbon shell, which gives you even greater weight savings without sacrificing strength. Weighing only 117g for the small version and 120g for the larger version, this saddle is a perfect upgrade for riders who want superior stiffness without any unnecessary weight.sp 01 boost tekno superflow the most futuristic full carbon saddle of all timedesigned in collaboration with dallara, the sp 01 boost tekno is designed to surpass futuristic paradigms, developing in the world of bike accessories the most innovative and exclusive materials already used in the top of the range automotive sector. The result of continuous studies by selle italia in technology and materials, the sp 01 boost tekno is the most futuristic full carbon saddle ever created by the asolo based company the result of a genuine engineering project that combines the critical aspects of processing carbon fibre with innovative and special technology such as “suspension link movement”.features use road rail material hi tech carbon shell material carbon rail dimensions 7x9mm dimensions small 130x245mm large 140x245mm weight small 117g large 120gbuy selle italia components from chain reaction cycles, the world's largest online bike store.