Stayhold® SHB015-EU verpakking (2 x wig, 1 bevestigingsband) gesloten doos

These are great. Very heavy duty. I’m using on carpet right now but these will hold on any surface. The lip that slides under your item is fairly think so if keeping things level is important you’ll need to use backwards or use another solution.

Works as advertised. I like it because the wedges can be easily moved to any position, but are heavy and strong enough to keep bulky objects in place.

For boxes and items that slide around these can really help, however they aren't perfect for all situations.

These are just what I was hoping for. They are big enough to grip and level large objects, with a design that is flexible enough for different situations. The rubber is commercial quality, which means it does not chip easily and should last for decades. I will update this review if it becomes brittle or otherwise fails with some time in the sun. Otherwise, I recommend these.