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’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

I can highly recommend this product. I have used these bags, filled with water, to help weigh down my outdoor telescope tripod frames. They have been outiside in mountain temperatures ranging from 12F through to 100f and have never leaked. I put white towels over them in the hotter months to help keep the black plastic cool. The local lizaards love this and sveral have nested under the bags!! In winter I put 6oz of salt in the bags mixed with the water to help stop freezing. They all still froze and were solid ice inside during the coldest months - but - they have never leaked, and that's all that matters to me. Really great, well made product and for $13 each they are fantastic value, IMHO. I hope that helps your purchsing decisions.

High quality product that should last for a long time. Like the fact that there's a double stopper system to prevent leaks.My only complaint is the buying options. I wanted a set so I don't have to fill/refill depending on the exercise. So I bought the 20/60/80 pound set. That's a big jump up from 20 to 60 pounds. Why not sell a 20/40/60 set? Or 40/60/80? Or 20/40/60/80? Docking one star for not having better buying options.

I use this with a sandbag that normally carries 50 lb sand. With water, it is about 30 lb. generally, I take it when I am traveling and I want to do either crossfit style workouts. Compared to sand, the water is even more unstable and moves during olympic type movements or sandbag specific movements (with sandbags, that instability is somewhat the point, so this partly makes up for the fact that water is lighter than sand.). At a hotel, I usually fill these in the bathtub on my first day, then empty it out the night before I leave and leave the cap off overnight and put a spoon in to get it started on drying overnight. No problems with leaking. Now, my sandbag and these bladders are just something I pack to go on a trip.

I had triple velcro bags that came with my sand bag but they ripped. So far this bag has help up with sand and no issues. Filling the bag takes a little time but not a big deal. I used a funnel

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.

Got tired of duct taping the sand tubes I buy for weight in rear of my vehicle or buying new bags because the duct tape eventually fails. It was a little work to fill them with sand, one time. But I am looking forward to years of trouble free usage.

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?

They are great, empty at will for light transport