Shoes Gravity Micro black 2018/19 kids Parameters: Rubber Outsole - outsole of durable rubber, includes reinforced panels for greater impact resistance and longer life. 3D Molded Tongue - An anatomically shaped 3D tongue precisely follows the leg for full-day comfort. Flexible Cuff - soft and flexible cuff for flexibility and comfort. Long Lasting Shell - the upper is made of synthetic materials that are resistant to abrasion and wear,