COMPOSITE - Recommended use: Road racing, MTB, Triathlon. - Cover: Real leather (black), Microfiber (colored). - Body: Carbon reinforced nylon 12. - Standard frame: Stainless steel AISI 304 Ø 7.1 mm / Carbon frame: Unidirectional carbon fiber 7.1 x 9.6mm. - Dimensions: 263 x 129mm. - Weight: 230g (standard frame), 180g (Carbon Rails). - Recommended for sizes: XS, S, M. - For those who love to feel every minimal bike reaction. Designed for medium-small pelvises.