Adidas sereno tracksuit bottoms junior the adidas sereno tracksuit bottoms are perfect for any youngster to wear outdoors to ensure they remain warm and comfortable at all times the tracksuit bottoms feature an elasticated waist for a secure comfortable fit the climalite technology helps ensure sweat is drawn away from the skin and ensure they remain cool dry and comfortable at all times zip pockets on the side of the trousers provide adequate storage space to keep all their belongings i