This portable water workout bag is effective fitness equipment for training your core,legs,arms,etc. Features: Made of premium PVC material for long-lasting durability. You can adjust the internal water volume to meet different training. Two handles assist you in doing various exercises and provide comfortable grip. Transparent bag and clear water level scale let you know how much water filled. The bag can be easily folded and stored in your backpack when not be in use. Compact to store and carry.Suitable for muscle training,interval training,weightlifting,etc. Specification: Material: PVC Size: 20 * 20 * 85 cm / 7.9 * 7.9 * 33.5 in Package size: 41 * 11 * 19 cm / 16.1 * 4.3 * 7.5 in Package weight: approx. 1.0 kg / 2.2 lb Package List: 1* Water Weight Bag 1* Air Pump NOTE: The transparent weight bag can be added some colired liquid paint(not included) as you like.