Features: This inflatable dumbbell is creative and practical to use, the weight of weights are adjustable since the water volume is controllable and depends on your need. Weight bags are made of quality PVC, it excels well in excellent airtight feature, not leak water, and very durable. And because it's soft so it won't hurt the floor when you drop it. Detachable design, easy to assemble to use and convenient to deflate for carrying or storage. Comes with necessary fittings. This workout set can help you build nice body, portable and space-saving, can be placed in home or office for private training. Nice workout equipment for people fond of fitness, suitable for bodybuilding exercise, muscle training, etc. Specification: Material: PVC + Metal Color: Black Weight: Adjustable (Max.25kg) Total Size(Inflated): approx. 51 x 21cm / 20 x 8.3inch Weight: approx. 1099g Package List: 8 x Fitness Weight Bags 2 x Levers 4 x Extension Rods 4 x Fixing Washers