Personalized Spina Bifida Awareness Ribbon T-Shirt. Tackling Spina Bifida together yellow ribbon and football support month T-Shirt - Vintage Black for a family or group walk event. 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.