The THERMOPOLIS PLUS LS long-sleeved men's running top by ASICS is made from a jersey knit that's been specially treated to lock in warmth and improve mobility. It has reflective bars at the cuffs and back to give you boosted visibility in poor light - or night time. As well as this, the ASICS branding is reflective. The slim-fit top has an ergonomic hem design for coverage, and thumb holes for comfort.