Body Glove Basic Deluxe Long Arm Lycra Shirt 6oz. is made with 6 oz. of lycra throughout. It is constructed with flatlock stitching and features UV protection and a boardshort connector. Please note: lycra shirt sizing is meant to be a snug fit. If you would like a looser fit, please choose larger sizes. It's not unheard of to go up 2 sizes larger than what the size chart shows you to be.