great to customize trim, but the provided velcro traps were too short to put around my neoprene drysuit with attached boots. I had to buy webbing to extend them. the straps were also attached to the pouch oddly, (not sewn to the end of the pouch) which makes the pouch flop around and protrudes about 2 inches, which gets really annoying when you are suited up trying to haul all your gear into/out of the dive site.
That being said, you do not notice them at all when you are actually diving.

I bought the 5lb version, but only fill them with 1 to 1 1/2 lbs of lead. On the maximum length setting they just make it around my ankle.

Purchased to help wife's (new diver) "floaty" feet. Sand wasn't enough weight. Couldn't find lead shot in Cozumel. Purchased 26, 1 oz. lead fishing weight "eggs". Very easy to fine tune.

These ankle weight pouches have worked quite well for our Scuba Rescue team. They offer enough adjustability to fit all size ankles without a problem. We did find that one of our ham fisted divers somehow managed to open the velcro and spill the shot while removing the pouch from his ankle. We rectified this potential issue by placing the shot in a ziplock bag and then placing the bag in the pouch. Problem solved!

THESE WOULD BE GREATLY IMPROVED WITH THE ADDITION OF A ZIPPER OUTSIDE THE VELCRO CLOSURE.
I ONLY USE #9 LEAD SHOT FOR WEIGHT, AND THE VELCRO WILL OPEN ON TRANSPORT IF CARE IS NOT TAKEN, CREATING QUITE A MESS.