You´ll love how you look in the Helly Hansen One Graphic Long sleeve when it´s the only layer you need, and you´ll appreciate the way the HH® OneTM baselayer technology keeps your body warm and dry over a broad range of environmental conditions. The X-Pulsion technology combines a dry Lifa® T3TM hollow fibre interior with a cross-fibre polyester exterior layer to deliver unexcelled comfort and UPF 30 sun protection.