⭕️ I purchased this from a certain famous website to use for squat-type training, but I'm selling it because I don't have time for strength training. ⭕️ This is the type where you can change the weight by filling it with water. ⭕️ Water bag for core training, maximum weight 20kg/35kg, strength training equipment, core training, training, strength training, barbell, easy weight adjustment with scale (35kg maximum weight) ⭕️ This is a new and unused item, but please understand that it has been in someone's possession before purchasing.