Workout Sandbag, Heavy Duty Workout Power Bags with Handles, 56-90 kg Adjustable Slam Bag for Fitness Strength Weight Training Cross-Training, Home Gym Exercise, Black (Unfilled)Product Features 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