PROCLUB HEAVY WEIGHT THERMAL LONG SLEEVE Size: S, M, L, XL, XLT, 2XL, 2XLT, 3XL, 3XLT 4XL, 4XLT, 5XL, 5XLT, 7XL Description 8.1 oz. 100% open-end cotton Premium thick waffle knit construction Ribbed neck and cuff made with lycra to maintain tightness wash after wash Preshrunk Double needle coverseamed neck, cuff and bottom hem Shoulder to shoulder tape S M L XL XLT 2XL 2XLT 3XL 3XLT 4XL 4XLT 5XL 5XLT 7XL CHEST 19" 21" 22.5" 24.5" 24.5" 28" 28" 30" 30" 31.5" 31.5" 33" 33" 34.5" LENGTH 28" 29" 30" 31" 33" 34" 36" 36" 38" 38" 39.5" 39.5" 41" 42" LENGTH (TOP OF BACK COLLAR TO THE BOTTOM END) CHEST (BOTTOM OF ARMPITHOLES ON EACH SIDE) A difference of size measured shown above can be up to - 1".