About this item ABOUT SIZES SELECTION: PLEASE CHECK SIZES CHART IN DESCRIPTION BEFORE ORDERING! Choose the size according to your foot length, foot width and weight. If you are not sure, please contact our customer service. HOT NEW FITNESS TREND: People all over the world are discovering the benefits of low impact training using the bounce shoes. You can reduce stress on your joints and lessen the chance of injury. LOSE WEIGHT AND HAVE FUN: You burn 20% more calories with jump shoes than normal training sneakers. Plus, the spring design lets you feel like you’re floating through the air. MULTIPLE HEALTH BENEFITS: Fix your posture, increase your metabolism, help your cardiovascular system, burn fat, fight osteoporosis, and have fun with the Unisex Fitness Jumping Shoes! NOTES: For non-professionals, in order to have a better bounce effect, please bounce your feet alternately when using your jumping shoes.