Sandbag Training Workout Universal Fillers – Can be Filled with Either Sand or Water. Multiple Sizes – XXL, XL, Large, Medium, Small – Guaranteed not to Leak

I needed weights at home for PT and these are perfect because I can adjust the weight as needed. I'm recovering from back surgery and particularly use these for bridges to build strength. Right now I'm using the small and medium ones. The medium and large are a bit wobbly and unruly since they're so big. I am going to follow advice from other reviews and get a weight bag to put them in. That will make them easier to manage and I really like the idea of being able to combine the different sizes to increase weight as necessary. I think putting them in a weight bag will also encourage me to use them for other exercises as I build strength. These are awesome! I told my PT he should recommend them to patients who need something similar.

Have only used them a couple of times because I just purchased them. I am using them for a workout challenge. Work great with water. I found them easy to fill using the faucet in the laundry sink. I didn't fill completely full because I wanted the water to move around so I would have to engage my core to stabilize the load. They seem to be durable, and no leaking.

I have purchased multiple of these bags in various sizes, and they have all held up far longer than the "high end" filler bags put out by the best bag makers. I couldn't be happier with them, except in the larger sized 120# bag. Why is the fill port on the side? It makes it an absolute nightmare to fill up by yourself. In the pictures, they are all on the end (which is perfect). So, why the change on the bigger ones?

Alternative use: Fill each 1/3 with sand and use as footrests in chair height bathtub to mitigate drowning risk in elderly (where length of tub is an issue).

I’m in Florida and worried about flooding with the hurricanes. They were filling sandbags close by at Fire Station but they were too heavy for me to carry. Plus you need to remove them after storm or they turn into cement. These were thick & long giving good protection from flooding. Luckily we never flooded but secure from the elements. After the storm, we just emptied - dry out & store for the next use! HIGHLY RECOMMEND

As an urban hiker, these are great for adding resistance. Filled with water and in my backpack along with 2x20oz bottles of drinking water, the pack weighed almost 20#. The main reason I bought this particular item is so I can reduce/eliminate the resistance once I have reached my workout goal. Using solid weights shortened my hikes due to the 'return home trek' factor. Being able to empty them, basically anywhere, was exactly what I was looking for. 👍🏼

It works well in that it will definitely hold water. It didn't leak for as long as I had the bags I ordered. It makes for a great workout. However, this rubbery material gives off a very strange, kind of chemical smell, which kind of reminds me of pee, but that's not exactly an accurate description. It's just the closest thing I could think of comparing the smell to. It's not quite as bad as a real urine smell, but I did find it offensive, and what is worse is that the smell clings to the material it sits on or near, especially fabric. I had to throw out the small wooden bin I stored it in, because I couldn't get the smell out, even after I washed it with baking soda.

I love the fact you can fill it to your liking. With water or sand. Great for working out and easy to carry. One thing I wish it had was straps maybe removable ones. That way if you want to lift it up with your hands to workout your upper body you can. Great value for the price.

They are great, empty at will for light transport