My son is 15 and has been living with diabetes since he was 2 ½ years old. We tried several pump belts early on, but discovered SPIbelt in 2014—and we’ve never looked back! He’s always been very active, and the no-bounce design has been absolutely perfect for him. I’m truly grateful to have found this product. If you’re considering it, don’t hesitate—buy one! You won’t be disappointed.