2 Pcs Adjustable Canvas-Kettlebell-Sandbag wtih Handle for Training Home Training, Yoga, Fitness (Black)

No velcro or inner bag as others have pointed out, but bag is super heavy duty with massive stitching and nylon webbing everywhere. I used 2.5gal and1gal freezer bags filled with pea grave as inner bags. 15# in the large bag goes in first, and then as many as four 5# bags, allowing for 35# max weight. l use them daily and drop them a lot and I've had no issues with seams splitting or any leakage of contents. You can get weight up to 50# by removing one of the 1gal bags of gravel and replacing with some small plate weights(5# each).

I was able to fill these each with 25 pounds of sand. They have held up great so far. My only grudge is that the handles aren’t the best quality, so they need regular readjusting while holding.

Handy and adjustable

These seem to be well made and served their purpose during a beach vacation, but they do not stay closed so sand comes out. These are designed to roll closed and clip like a dry bag, but these don't roll tightly and there's not enough tension created by the clip to stay closed. So next time I will bring plastic bags to hold the sand.

Instead of sand, I used my rice heat packs, neck, back and spot. They are great for weight and I know where they are if I need them.

I needed this for functional fitness and upon one drop, the bag split open with 20# of sand. Waste of money.

Bought these as a cost effective way to have kettlebells. They work for what I need them to do. Takes some getting used to because they arent rigid like real kettlebells so they tend to move around during certain exercises but still a great buy. I filled grocery bags with sand and placed them inside to control the amount of weight in them as well as simplify the process

Heard about sand leaking through bags so I bought a sandbag to hold the sand & put it in weight bag & it works really good, only had it a couple weeks but so far so good, however the downside was the time it took to arrive (2-4) weeks! Nothing at Amazon takes that long EVER !