Say it in black and white with this kids\' comfy T-shirt - Muscles Matter! Great for: everything active including den building, gymnastics, ball games, and racquet sportsYou\'ll love: the technical fabric that\'s soft and lightweight, wicking away sweat and moisture quicklyGet the look: layer up for a sport or chill-out days with a matching #MusclesMatter hoodie Go Bright with Muscular Dystrophy UK and Tikiboo - we\'ll donate 20% of every sale in this range to MDUK. Size guide for Kids T-shirts SIZE S M L XL Age 4-5 6-7 8 10-12   Taped neck and shoulders Twin needle sleeves and hem  Baby ribbed collar 60% ringspun combed cotton/40% polyester