UNISEX TEE designed by Jude Thomas and made by Silky Socks, the armpit is rounded beautifully so you don't get wrinkles when trying to sublimate. They are a 6.8oz thickness, not see through and soft to the touch, stretchy and comfy to wear all day. They are a cotton feel, with material blend of 95% poly, 5% spandex blend, and one that you can wear a white shirt with a simple logo or sublimate all over it. You do not need to insert paper in the middle when sublimating as the shirt will not experience bleed. The fit is a relaxed yet fashion fit, true to size. Developed by Mr. Silky and our factory: Everything from the fabric, thickness, shape and fit was developed by us for premier wearability and printability! Here is the approximate size dimensions each size Length x Chest Width:XS: 25.5 x 17.5" S: 27x 19" M: 28" x 20"L: 29.5" x 21.5"XL: 30.5" x 23.5"XXL: 32" x 25"