Personalized Cute Kawaii Mustard T-Shirt. Funny matching ketchup and mustard theme Halloween T-Shirt - White with cute Kawaii squeeze bottle of mustard.T-Shirt - White 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.