Those old cotton terry get-ups don't stand a chance against Old Man Winter—but this next evolution in winter workout warfare didn't just come to play: the Fly-By came to win. Poly-fill insulation-like warmth in a sweat and speed-ready, fleece-like design. Right handwarmer pocket conceals a smaller, smartphone-friendly pocket and headphone port. Poly; poly/spandex.
XS(0-2), S(4-6), M(8-10), L(12-14), XL(16-18).