O-ring

Took it out on a weekend float trip and the thing held up through rocky rapids without a scratch. The rubber feels dense and solid, and it’s easy to clip carabiners onto. Exactly what I needed for keeping gear tethered to the raft.

The fit is snug enough that I don't worry about my carabiner sliding off mid-rapid, and it's held up through a few rocky portages without any wear. Solid little piece of kit for keeping gear tethered to the boat.

Dropped mine in the river during a guide trip and it held up through the whole season, no cracks or stretching. The rubber feels dense enough that I trust it with my spare paddle tied to the deck.