The GoSports FItness Weight Bag is the perfect fitness training aid for taking workouts to the next level. The Weight Bag is designed to be weight adjustable to accommodate exercises for all skill levels. Simply fill the included four inner bags with sand, each inner bag holds up to 10 lbs of sand (sand not included). This makes it easy to fill the Weight Bag with weight ranging from 10-40 lbs for a wide variety of exercises: weightlifting, toning, stretching and more. The Weight Bag is essential for home workouts, personal training, sports training camps, and adding variety to exercises to encourage a consistent workout routine. The Weight Bag also features a high density ultra durable construction that is built for high intensity workouts. The bag also features 6 built-in reinforced handles to provide multiple hand grip positions for added workout variety. Now take fitness to new heights with the GoSports Fitness Weight Bag!.