Mens RDSinglet Horizon - Acid Size:Small sporting the same design that

sporting the same design that one Usain Bolt wore throughout his record-breaking career

The barely-there experience is aided by the short brim design – which reduces aero drag – preventing your cap from parting-ways as you're on track for a PB

and a brushed back to help regulate temps

given how effective the body-mapped ventilation works and just how cool it looks on the road

Mens RDSinglet Horizon - Acid Size:Small sporting the same design thatCiele's lightweight RD singlet is built for speed without compromise. The COOLmatic EXP textile is lightweight, quick drying and helps temperature control everything you want out of your running shirt. For extra ventilation the back features an airBEAM panel made from COOLmatic EXP mesh. The entire garment is made with no sew welded construction for a lightweight no chafe finish. COOLmatic EXP knit fabric Elded construction airBEAM panel w COOLmatic