These kangaroo jump shoes are similar to that of those that are the kangoo jumps, made out of high quality materials such as high polyer plastic, tire quality rubber, hydraulic press for weight capacity check. Perfect for dancing, jumping, bouncing, running, jogging short and long distances, workouts and any other type of exercise. PRODUCT CARE: Do not use during temperatures below 8 Degrees Celsius either indoors or outdoors as it may cause damage. Store in room temperature area. Size Chart: Womens 5 - 7.5 Recommended for individuals with feet length 8.5 inches/21.6CM - 9.4 inches/23.8 Womens 8 - 10 Recommended for individuals with feet length 9.5 inches/24CM - 10.2 inches/26cm Womens 11 - 13 Recommended for individuals with feet length 10.5 inches/26.7CM - 11.2inches/28.6cm Mens 6 - 8 Recommended for individuals with feet length 9.5 inches/24CM - 10.2 inches/26cm Mens 9 - 11 Recommended for individuals with feet length 10.5 inches/26.7CM - 11.2inches/28.6cm