Profile Design 43 ASC Extensions 400mm XLABS give you more breathability where

give you more breathability where you need it the most

Side panels of naturally cooling Vapour-Cool provide excellent breathability while two angled covered rear pockets give you plenty of space for the nutrition you need

providing unparalleled comfort

Orca's RS1 badge is applied to products that utilize the latest in race science materials and construction techniques

and reduce micro-trauma to the muscles in your lower leg

Profile Design 43 ASC Extensions 400mm XLABS give you more breathability whereDescription When designing these extensions we wanted to utilize carbon fibers' natural ability to be shaped into an aerodynamic form while still providing a good amount of strength and rigidity, hence ASC stands for Aero Shaped Carbon.