Description The Ergon ST Core Evo Men is a touring saddle with orthopaedic comfort foam & two saddle shells for shock absorption for those long rides. Touring saddle Men’s specific saddle Ergonomic core for adapting to pedalling motions Nylon composite shell This ergonomic men’s saddle uses orthopaedic comfort foam in the areas where your sit bones rest. Creating optimum pressure distribution. This touring saddle features Ergon’s Core 3D technology which means a dual-shell design in the saddles core. The dual shell means that the rocking motion from you pedalling is transferred into the saddle, giving you a suspenion effect. Featuring an extra deep relief channel from nearly the end of the saddle to nearly the top – this saddle is tailored to male anatomy. Speaking of the male anatomy, Ergon make every effort to provide pressure relief and comfort in their saddles. When there is too much pressure to the male perineal area, blood flow to the area can become restricted. This can result in numbness, and progress to more serious problems if not addressed. Ergon’s male-specific saddles effectively alleviate this issue with their pronounced & deep relief channel. Allowing for optimal pressure relief & preventing the restriction of blood flow. Ergon ST Core Evo Men Specs Dimensions: 273 mm L x 177 mm W x 83 mm H Weight: 500 g (in the Small / Medium) Shell: Nylon Composite Rails: CroMo Cover: Microfiber Padding: Orthopaedic Comfort Foam & Core 3D Maximum Load: 140 kgs Choosing your size Small / Medium Size: 9-12cm Sit Bone Width Medium / Large Size: 12-16cm Sit Bone Width Measure your sit bone width at home by sitting on a piece of cardboard and measuring the distance between the indents made by your sit bones in the cardboard!