Personalized Little Brother Rainbow Dinosaur T-Shirt. Little Brother dinosaur. A cute dinosaur doodle with colorful back plates smiles as he peeks over the words "Little Brother". Cute gift for any little bro who loves dinosaurs. 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.