Fizik Luce R5 SaddleWhen producing its Luce R5 model, Fizik created an all-new construction, which has resulted in a women's saddle that offers outstanding power transfer and lasting comfort on very long rides. It's designed to offer consistent comfort no matter how hard you're pushing yourself.Spine Concept EVOThis saddle is available in two different sizes. Within Fizik's Spine Concept Evo saddle fitment guide, the width of Fizik's "Regular" saddles are best for women with relatively high power output to bodyweight ratios. Fizik's "Large" saddles are best for women with low power output to bodyweight ratios.Advanced ShellThe shell of the Luce R5 combines three different sections, that consists of a central nylon spine that's reinforced with carbon fibre and two thermoplastic elastomers. This ensures the Luce R5 provides the ideal mix of low weight, strength and flexibility.Central Cut-outAnother great feature of the shell is that it has a long central cut-out. Fizik calls this its IschialFlex technology, as it provides flexible support for the sit bone area. It also reduces pressure on sensitive areas so you can enjoy consistent comfort on even the longest rides.Features:  Cover: IschialFlex  Shell: Carbon-reinforced nylon  Rail: S-alloy rail  Padding: Comfort Core foam  Versus Pressure Relief Channel  Integrated Clip System compatible  Dimensions: Regular: 281x144mm; Large: 281x155mm  Weight: Regular: 230g; Large: 240gBuy Fizik Components from Chain Reaction Cycles, the World's Largest Online Bike Store.