Outfitter's Note: this is a UNISEX-sized shoe. Men's sizes are shown — women should order 1.5 sizes below their standard running shoe size. For example: for a women's size 9.5 shoe, order a size 8. The Speedland RX:FPY is for runners who demand shoes that evolve with their goals. This hyper performance trainer transforms from your reliable daily shoe to race-day ready with removable components that let you customize your experience. The BOA Fit System with PerformFit Wrap gives you micro-adjustable precision that adapts to your needs, while the uncompressed SCF foam and proprietary drop-in midsole blend provide the responsive comfort that propels you forward faster than you thought possible. Details: Upper: Spacer mesh construction with strategically placed high-tenacity fiber creates the perfect balance of breathability and protection. The PerformFit Wrap activated by the BOA Fit System delivers micro-adjustable precision that performs in the toughest conditions, giving you that locked-in feeling that builds confidence at any pace. Midsole: Uncompressed SCF foam teams up with a proprietary drop-in midsole blend elastomer to create maximum comfort and responsiveness. The removable rigid carbon plate lets you customize your ride—keep it in for race-day propulsion or remove it for more natural daily training.Outsole: Scratch Rubber construction with Michelin OC1 Compound featuring FIBERLITE technology delivers the kind of traction and durability that serious distance runners demand, whether you're grinding through training miles or chasing personal bests.