Yours, mine, and ours! These 100% skin safe nitrile rings come in a 3 pack, so you'd better share. You will enjoy ultimate rigidity, total safety and super constriction. They're perfect for use with silicone, oil, or water based lubricants. Three rings are included to ensure just the right fit for your desires! Inner diameter of the three rings are 1.5 inches, 1.75 inches and 2 inches.