Tom of Finland
Great quality and feel but not much "stretch"
These are great quality pieces (feel amazing to the touch) but since they don't have much stretch to them, they'll only be effective if one gives you the perfect fit. For example, if your "equipment" falls between the two larger rings, the largest will be too big and the medium won't stretch enough to be comfortable.
Tom of Finland Pleasure Tools is a brand that gets its name from the famous Finnish artist Tom of Finland. His real name was Touko Laaksonen, and he influenced gay culture greatly with his fantastical fetish drawings of men. A percentage of profits from the range goes to the Tom of Finland non-profit foundation.