Personalized Swim Coach Small Heart T-Shirt. Swim Coach with a heart dotting the i in the word swim is a fun design for coaches at back to school, birthdays, holidays and summer beach and pool season. Everyone loves our Custom T-Shirts! 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.