Joma children's tennis shoes with heel reinforcement and grooved ergonomic sole Joma Slam Jr children's tennis shoes are a great piece for your little one's training. The shoe has a heel reinforcement, which, together with the laces, ensures excellent fixation. The grooved sole allows great movement and transition between the heel and the toe, thanks to which the performance in sports is increased. Special flat stitching of the midsole and upper part ensures lightness and greater comfort. More stressed segments are reinforced with more durable material. The shoes are made by special injection, which means that the upper part does not have any seams or rigid materials, thanks to which the shoes perfectly adapt to the foot, they are light and comfortable with high flexibility. In the narrowest part of the sole, there is a special TPU material that prevents rotation between the front and back of the sole. Material: phylon, rubber, EVA, textile, polyester