PULSE OX SENSOR: Track your blood oxygen saturation while you’re awake or asleep

Soft brushed fleece material

So you’re free to move through any chilly adventure in total comfort

it provides a snug fit that loosens with wear

Elastic lacing system for easy on/off use

SAYSKY Men's Clean Motion Long Sleeve Black Bottoms PULSE OX SENSOR: Track yourXMRLS51C901 The Saysky Clean Motion Long Sleeve is for passionate runners who also love hitting the gym and are looking for the perfect soft and breathable gear. Our Motion tops are made out of drirelease fabric, which has one of the best moisture wicking and quick drying abilities in the market. The unique drirelease technology has the moisture transport system inherent in the yarn and delivers permanent wicking that doesnt wash out. Features Men's