Personalized Not Single I'm Available T-Shirt. Funny relationship, dating status T-Shirt - White for anyone who's dating says I'm Not Single I'm Available. Perfect if you're in a non-serious relationship or getting ready for a first date. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.