Sport Mode? Consider it on. The FIBERCLOUD CREW delivers great stretch and breathability in an incredibly soft fabric. Plus, its cool to the touch and features side seams for a more active look and feel. Your new in-and-out-of-the-gym staple. Fit & Design: Long sleeve Crewneck Soft and breathable Fibercloud fabric delivers great stretch and is cool to the touch Features side seams Additional Details: