This GoodLife 20-lb (9.1kg) Weighted Vest is designed to push your endurance to the next level by adding extra resistance to your exercise routines. With 16 removable iron sand-filled weights, you can customize your workout intensity, ranging from 1.25lb to 20lb (0.57kg to 9.1kg). The padded shoulders ensure exceptional comfort, even during intense sessions. The reflective strips prioritize your safety in low-light conditions, making it perfect for outdoor activities like jogging. Tailor the vest to your liking with the adjustable grip strip closure, ensuring a snug and comfortable fit. The convenient 3.5" x 6.5" (8.90cmX16.51cm) pocket provides easy access and visibility for your smartphone, keeping you connected while you work up a sweat.