EMARTHeavy Duty Sandbag Photo Studio Weight Bag Saddlebag Design for Photography Light Stand Tripod, Outdoor Patio, Sports, Pop up Tent, Umbrella Base, Camping, Fishing Chair -4 Packs Set(Black)

Not used yet so can't speak to durability but I am hopeful.BUT - one pouch of one saddlebag (2 pouches = 1 saddlebag) was received with a clean cut in the material of the pouch. Bummer. I have patched the cut material with a heavy duty tent repair patch using tent repair adhesive. I will be using the sand bags at the bottom of a stand that holds gun range targets. The weight of the bags keeps the target up in wind.Update: Seller saw the above review and reimbursed my payment without my ask. My patch is working well and the bags are very good for my task. Thank you seller. I changed the rating to 5*

The bags are empty and you have to fill it with sand. It comes with plastic zip lock which makes it easy to do. I bought a 50lb bag of play sand from Home Depot. That was enough and I was able to fill up all 8 bags with sand. The 2 zipper design was a great idea and feels more secure.

This sandbag kit comes with four double-sided sandbags. It also include several plastic lines which I have not used; I assume they are to put the sand in so that the bags themselves stay clean. I have chosen to put the sand directly into the bag pockets.East compartment is double-sealed. There are two full-length zippers that zip in opposite directions, so there is no concern of sand leaking out. The experience I had is that the zipper pulls are easy to get in position where they're difficult to close. I managed to get it each time though.Each compartment holds roughly 10 cups of sand, which is more than I thought it would.Each bag also comes with a clasp to attach it to what it's being used to hold down. I haven't found it necessary, but it's there.I'm using a couple of these on the base of my camera tripod. It's holding a PTZ camera nine feet up, so these sandbags help keep it steady so there is no vibration and it doesn't tip over if bumped.

Seem to be quite sturdy and used three of them and they worked.Umbrell didn't fly away

I have not specifically used them yet but bigger than I thought but will definitely work to hold down my backdrop stand.

Honestly there's not a huge amount to comment on about these. I'm a photographer and I got these to weigh down/ stabilize my tripod and monolight stands. The plastic bags they include worked fine work me, I filled them up with sand and there was no leakage. Still put that in a heavy duty ziplock though just to be 110% sure. The nylon bags themselves are okay as far as durability although the zippers can be a bit annoying to open and close, but that's not really something to complain about imo. Especially since I doubt I'll be opening and closing them too often. I like the addition of hooks as well, for the just in case situations.Long story less long... they're a decent sand bag. For in studio and occasional outside photographer work, I'd recommend them. They do exactly what they're supposed to, a very decent value for your money.

The bags themselves hold enough to be a good weight to weight down my laser projects, however many of the zippers were split open when I took them out of the packaging. There are two sets of zippers on each bag which will help, and I won’t be having to unzip them at all now that they’re filled, but I do worry about them holding up. Also, zipping the inner zipper isn’t fun. Most were not aligned. One even seemed to have one side longer than the other. They’re filled so I’ll keep them but I would not purchase again.Edited to add I did not receive the hooks shown with these bags!

Work will for my mic stands......good and strong and easy to fill with sand.