Tear-Resistant & Durable: Our workout sandbag is made with high-quality materials, featuring a polyester Cordura 1000D inner bag with a PVC coating and a nylon 1050D Cordura outer bag. Reinforced connections and full-length handles ensure reliability Waterproof & Sand-Proof: Our fitness sandbag features YKK zippers and double-layer hook-and-loop closures, reinforced with a waterproof outer layer and double-stitched side seams to better contain the sand and avoid spillage Full-Body Training Tool: This sand bag for weight training is ideal for weight training, muscle building, and conditioning exercises. It targets shoulders, arms, chest, abs, legs, and overall strength, providing a full-body workout Adjustable Weight: Featuring a leak-proof filling bag, this adjustable sand bag allows you to adjust the weight from 50 to 125 lbs, making it suitable for different fitness levels and training needs