Icebreaker Size Chart This high-performing relaxed-fit T-shirt is made to move freely with you, so you can forget about what you're wearing, and concentrate on clocking up those miles on the bike or trail. It's designed to avoid chafing, with no shoulder seam, bonded side and back seams and a low-profile merrow stitch. A smart choice for warm weather when you want extra coverage, or for intense sessions in the gym, the Kinetica Long Sleeve Crewe features Cool-Lite(TM) fabric to keep you cool, and corespun technology, where Icebreaker wrapped merino wool and natural TENCEL(R) fibers around nylon for extra durability and next-to-skin softness. The eyelet mesh back and sleeves are ultra-breathable, so you can stay comfortable for longer. Features: - Cool-Lite(TM) fabric for comfort in warm to hot conditions - Corespun fabric for enhanced durability - Eyelet mesh back for enhanced ventilation - Bonded forward set shoulder seam - Low profile merrow stitch for next to skin comfort - Center back length:60.5 cm/23 1/4", size M - Icebreaker tonal screen print logo - Fabric Weight: 155 Ultralight - Fabric: Body: 50% Merino Wool, 33% TENCEL(R), 12% Nylon, 5% LYCRA(R), Eyelet: 51% Merino Wool, 34% TENCEL(R), 15% Nylon - Product Weight: Medium = 160 g / 5.64 oz