Kryptek Theos Merino Long Sleeve Shirt - Men's Olive L/Reg. By using 150 grams of highly breathable perforated 100percent Merino Wool where you need it most in the upper back armpits and back of arms. 200 grams in the lower back and lower arms and 250 grams through the body creating a naturally antimicrobial and moisture-wicking envelope of performance. Specifications for Kryptek Theos Merino Long Sleeve Shirt - Men's: Manufacturer: Kryptek Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Regular Gender: Male Color: Olive Application: Outdoor Fabric/Material: 100percent Merino Wool Sleeve Type: Long Sleeve Features of Kryptek Theos Merino Long Sleeve Shirt - Men's 19.5 Microns Antimicrobial Moisture Wicking Breathable Body Mapping Mesh 3 Button Henley Design Thumb Holes for Layering Drop Tail Back Hem Package Contents: Kryptek Theos Merino Long Sleeve Shirt - Men's Kryptek 21MWHLSO5: Theos Merino Long Sleeve Shirt - Men's Olive L/Reg