Personalized Tiny But Mighty T-Shirt. Add a touch of colorful fun with this 'Tiny But Mighty' design adorned with playful hearts. It's perfect for any little one, showcasing vibrant shades of blue and purple that pop on a T-Shirt - Vintage Black. 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.