This punching bag is by far the best bag I have ever used and the fact that it's filled with water makes it that much better. I first was introduced to this bag at my local boxing gym and after throwing just a jab followed by a straight right I immediately fell in love with it. There is a 21" Aqua bag which is the largest along with much smaller ones but this 18" is just perfect for me since I prefer my bags to move around when I punch them so that I can practice my leg and head movements a lot better. This bag is so versatile, so whether you're practicing your jabs, straight right/left punches, hooks, uppercuts, this bag handles it all, you can practice combos with ease and this bag is easy on your hands and wrists, so you are less likely to injure your hands while punching the bag compared to the traditional punching bag that may cause some injury if you hit it too hard and without the proper form. Another huge plus to this bag is that it feels like you're hitting the human body which is just great. Another plus and this is my personal opinion, is that I think it requires a lot less energy to hit this bag compared to the traditional punching bag, so since I've had this bag my workout sessions have lasted a whole lot longer than when I used to use a traditional bag, so that right there makes this bag so worth it. And the quality of this bag is superior, you will not be disappointed with this bag and it's very affordable in my opinion and I believe that this bag will last you for a very long time, much longer than the tradional heavy bag. I can't recommend this bag enough, I don't think you'll ever go back to the traditional heavy bag after trying out this amazing product. If you're considering on purchasing the Aqua Punching bag don't hesitate and just do it, make sure to purchase the hanging kit as well if you dont have something to hang the bag with already, you will not be dissapointed! Read more