I Wear this Shirt Periodically Periodic Table of Elements Funny T-Shirt I Wear this Shirt Periodically Periodic Table of Elements Funny Design I Wear this Shirt Periodically Periodic Table of Elements Funny T-Shirt is on a high quality adult unisex style tee. Machine Washable, Material: 100% preshrunk cotton is constructed of soft, natural cotton with quality features for years of casual wear. Garment: seamless body with set-in sleeves double-needle stitched sleeves, bottom hem and front neck. Shoulder-to-shoulder taping.