Century Wavemaster XXL | Freestanding Punching Bag with Base | Heavy Bag Boxing Martial Arts Kickboxing Bag | Optimal Strength and Cardio Training Bag

I'm giving this a 5 based on other stand alone heavy bags that I've used. If I'm comparing to a good hanging heavy bag I'd probably give it a 4. I'm also giving it 5 having filled it with sand instead of water. If it is filled with water there is so much more movement of the base. The movement of the water inside the base makes it kick around entirely to much when getting in a work out. With sand the movement of the base is minimal. I am 6'2" 300lbs. Been boxing about a year now and I can lay into it pretty hard before it really moves around. I also have it on a rubber mat which helps with the skidding around.If you are going to fill it with sand, do yourself a favor and spend the $20 to $25 for the 50lb bag of dried, white sandbox sand. It took me 3 hours, with a wide mouth funnel, to get 100lbs of $5 wet sand bags. I do not have the patience for that. I order white sandbox sand from Walmart had it the next afternoon and It took me all of 5 minutes to get the other 150lbs of the good white sandbox sand in.Will update if neccessary! So far after 3 workouts, I'm very happy with this.

Love this bag. Super nice quality, easy to assemble. And holds up well to kicks/punches. You can fill the base to desired weight so it’s sturdy but also not overly heavy if you need to move it. Base is shaped like a tire so I filled it and then rolled it to were I wanted it. I put water in originally but poured that out for sand since I’m in Minnesota and didn’t want the water to feeze and crack the base. But overall it’s a super nice bag and seems to be holding up really well to regular use.

I'm only writing this review because it seems like neither the reviews nor the manual do a good job of illustrating to people the difference between water and sand when it comes to filling the base.The base has a capacity of about 33 gallons. A gallon of water weighs about 8.3 lbs and a gallon of dry standard sand weighs about 13 lbs. Sand is a little more than 1.5x as heavy as water per volume. Going with sand allows you to put more weight in the base per volume.Also water, as a liquid, is going to carry force throughout the water meaning when you hit the bag it will generate waves in the water within the base. Sand on the other hand is solid and will deaden the force not allowing it to carry throughout the sand in the base nearly as much. Sand does a better job of reducing the force that acts on the base from hits the bag takes, meaning it is even less likely to slide around.I'm 6'3 220lbs and I put 250lbs of sand in this base (which is a little under 60% full) and it stands on a concrete floor so there's not a ton of friction and I can open up on this bag without it moving very much at all. The bag height is perfect for my height I would say at about 6'6 this bag may start to be a bit short for you, but everyone around or under my height will probably enjoy this size bag. If you want there to be absolutely zero movement you can grab a thin rubber mat, like what you would place under an elliptical machine, which will adhere great to most smooth surfaces (i.e. concrete, tile, hardwood, etc.) and that should solve most of your issues.If you do decide to go with sand be sure to grab a funnel at Home Depot or where ever you buy your sand at, it'll make filling the base way easier. The manual will tell you to use the bag as a lever to help you distribute the sand within the base, I'd say skip that and just replace the lid, grab the base on the side with the opening and lift with your legs to re-distribute the sand between each 50lb bag.TL;DR: Good product & if you want a more sturdy base fill it with sand instead of water, especially if you're a guy and you don't want to have to pull your punches. If you're reading these reviews and you're worried about stability don't be, disregard people who filled the base with water and have complaints about movement so long as you're comfortable filling yours with sand you will get a far better result.

I like this punching bag a lot, but it doesn't seem quite as sturdy as the ones at my karate dojo. Same brand, but the cushion seems slightly less durable and the bag seems unscrew much more often. I'm not sure if this is a manufacturing difference between the general consumer wave master and the ones that you get with the custom logo for your dojo, or whether it has something to do with the padded floor and the dojo.