Pro Club Comfort Short Sleeve T-Shirt 5.9 oz, preshrunk 100% Open-end cotton Industrial standard relaxed fit and neck Double needle coverseamed neck Shoulder to shoulder tape Double needle sleeves and bottom hem Regular weight(thinner than heavy weight)/Regular crew neck S-M-L-XL-2XL-3XL-4XL-5XL We have 16 different colors & 5 different sizes. S M L XL 2XL 3XL LENGTH(Top of back collar to the bottom end) 28" 29.75" 30.5" 31" 33.75" 35.5" CHEST(Bottom of armpitholes on each side) 18" 21.5" 22" 23.5" 25.75" 28.5" A difference of size measured shown above can be - 1".