Deerhunter Climate 1/2 Zip Men's T-Shirt with 37.5® Technology has been designed for the active outdoorsman as the advanced t-shirt utilises 37.5® Technology to help maintain your body temperature at the ideal core temperature of 37.5° so you are ready for any adventure. Crafted from a high quality blend of 60% polyester and 40% Polyester (with 37.5® Technology), the stretchy pique fabric ensures maximum flexibility and ease of movement. The Climate T-Shirt features a stylish zip neck for easy temperature regulation and a comfortable fit, while the short sleeves are ideal for warmer days and active pursuits. Available in Forest Ember and in sizes S-4XL Versatile and functional t-shirt with a modern style, ideal for the contemporary hunter looking to stay fresh and comfortable on all outdoor adventures Short sleeve polo shirt style with contemporary addition of a half zip 37.5® Technology to keep the body at a core regulated temperature Stretchable pique fabric to allow a greater freedom of movement Fabric comprising of 60% Polyester and 40% 37.5® Technology Logo embroidery Machine washable following manufacturer's instructions Size: S - Chest 92cm-96cm (36"-38"), M - Chest 96cm-100cm (38"-39"), L - Chest 104cm (41"), XL - Chest 106 cm - 112cm (43"-44"), 2XL - Chest 112-116cm (44"-46"), 3XL - Chest 120cm-124cm (47"-49"), 4XL - Chest 124-128cm (49"-50")