's Active Tee is made using Coolever Tech which is breathable textile with moisture-wicking characteristics which help to keep you cool. The added bonus of UV protection means you'll stay cool and keep harmful UV rays at bay.

The entire shirt is sewn with a flat-lock seam – in a contrast coloured thread for a bit of style– meaning it's comfortable against your skin and fits more seamlessly under an outer layer when needed. The signature Ostrya spiral logo sits on the chest in a tonal print for a subtle hit of branding.