Men's 2XU Aero Long Sleeve Top Size:Large the Speed 4 is very

the Speed 4 is very lightweight

An updated woven upper gives you security and containment at a significantly lighter weight than the Ja Fly 3

Whether you're wet or dry the polyester spandex construction ensures body fit & moisture management qualities

and slits on the sleeves let you check your watch with ease

Designed for trail runners who like to go fast

Men's 2XU Aero Long Sleeve Top Size:Large the Speed 4 is veryWith X VENT fabric technology, the Aero Long Sleeve combines a recycled double knit sweat wicking body and lightweight breathable mesh back to keep you dry and cool so you can perform in comfort. Stay Cool: Lightweight mesh back panel engineered to enhance breathability and ventilation. Quick Drying: Double knit constructed main panel leverages an inner layer to transport sweat away from skin and an outer layer to disperse moisture on surface,