Selle San Marco: BIOAKTIVE TREKKING BIOFOAM OPEN-FIT SADDLE The Bioaktive Trekking range is for people who enjoy their free time cycling. The perfect saddles for the lovers of trekking or simply for riding on city roads in freedom. The biodynamic structure guarantees reduced weight and lasting greater resistance. If you prefer the longer routes, the more compact padding of the "small" saddle will provide the best comfort. The large is better suited for shorted more leisurely rides. The open system is the result of clinical tests and ongoing anatomical research. The feature consists of a gradual opening in the saddle to ensure a total comfort and relief in the perineal area. Features: Rail: Steel/Carbon Shell: Polypropylene Padding: Open Biofoam Cover: Black Matt Silkfeel Size: Small 175mm Size: Large 188mm Weight: 385g / 415g Biofoam: A light weight memory foam with great resilience. Biofoam’s structure is accommodating with the movements of the pelvis during pedalling. It reduces saddle weight and guarantees comfort and durability. The “closed cell” surface also ensures the saddle will repel water. Bioaktive is a successful line of saddles anatomically designed to suit every style of riding. It benefits of the elaborate experience and heritage of Selle San Marco, an Italian company. That produces handmade bicycle saddles since 1935. Premium materials, high technology. Solutions and dedicated features make each Bioaktive saddles unique. The need to simplify. The choice for the perfect saddle resulted in a range designed according to riding style: Sportive, trekking or city.