Personalized Christmas, Be Nice Or I'll Tell Santa, Gifts, Typography T-Shirt. Cute, fun and adorable design with gifts and text 'Be nice or I'll tell Santa'. Modern and trendy gift, perfect for the Christmas lover in your life. 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.