EXPERIENCE THE FUN CHALLENGE OF A 'LIVE ' WEIGHT - In contrast to 'dead ' weights of Sand Bag, the water weights bag reacts to your every movement. Because of this, EVERY REPITITION IS DIFFERENT, an excellent challenge for muscles and motor to give different action to control each time. This trains athletes to be robust, promotes muscle growth for the fitness lover and trains good . EASY TO SET UP & FILL - All you need to do is add air and water in the bags to get a full body workout. Our transparent bags are marked according to water level/weight, athletes can follow the indicator to see how many kilos of water is in the equipment based on the water level height, making adjusting the weight easy and available for anyone from beginners to pros to use. (Foot Pump included). PERFECT HOME FITNESS SOLUTION - Skip the gym and workout in the comfort, , and privacy of your home. The bag is an weightlifting bag that allows you to train anywhere. Filled with water, it is designed to accommodate all types of workouts. Gift for Christmas or Birthday, our fitness equipment for all fitness fans. EXTREME - With Heavy Duty Stitching& No-Leak Closure, the water weights bag is leakproof and heavy duty. Handles to perform correct movement and you have a firm but comfortable grip. every bag is rigorously inspected and tested to withstand 451 LBS of pure pulling power. GREAT SUBSTITUTE FOR SANDBAG - Used for the same purpose as sandbags, workout water bags are very convenient. When empty, the bag becomes a small piece to into your pack and go everywhere, light and portable. You can now easily stick with your fitness routine wherever you go! Function:Core Strength Training Exerciser Material: PVC+diving material Color: As Shown Product Weight:630 g Package Contents: 1 x water bag for core strength training Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.