20" pit to pit 26" long Upper arms are tight on me. If you are a person with larger upper arms, this may not be the best option polyester/spandex Medium to high impact workouts at the Chafe-free seamless construction Grippers at inner hem to prevent it riding up Thumbholes Fitted next to the body Style #: 981529 gym studio yoga pilates outdoors walking running jogging hiking lightweight comfy comfortable casual workout active activewear errands baselayer layering outdoors training commuting class