Zensah Limitless Compression Arm Warmers 87% Nylon, 13% Spandex Imported Thumbholes for added hands warmth One mesh side pocket ideal for carrying iPhone, gels, or keys - there is only a pocket on one of the two sleeves Limitless Arm Warmers are an essential transition piece for cooler weather Moisture wicking and anti-odor proprietary fabric ensures these compression arm sleeves stay light and dry Compression in the arm warmers improves circulation for faster recovery Thumbholes for added hands warmth