Comfortable, stretchy kids' T-shirt with a cooling effect. Perfect for gym lessons and hot days. Models are 50.4''/128cm and wearing size 8Y. In this kids' T-shirt made from stretchy, quick-drying and moisture-wicking jersey, children can play to their heart's content. This easy-care top is perfect for sports and gym lessons! The finishing treatment in Reima's Xylitol Cool material creates a cooling sensation against skin. It also makes the skin surface temperature drop by 1 to 3 degrees! The cooling effect is the result of using xylitol and erythritol, which are edible sweeteners, so it's harmless. An ultraviolet protection factor of 40+ allows for longer hours playing outside in the sun. To complete the UV protection, apply sunscreen lotion to bare skin areas and make sure kids wear a light hat and sunglasses.