The Spareparts "O"-Stabilizer Ring is great for supporting heavier dildos or dildos with small or flimsy bases by expanding the size of the dildo base, providing better stability to the dildo when using your harness. Available in two sizes so you can use every toy in your collection. Made of black neoprene foam. Simple to use, just wet the inside hole with a little water, and slide down the dildo's shaft!