Explore your backdoor with confidence. With a small and medium plug the Crystal Jellies Anal Trainer Kit is the perfect fit for anal beginners. The small plug is 3.5 inches in diameter with 3.75 inches insertable length the large plug is 4.25 inches in diameter with 4.75 inches insertable length. These plugs feature a wide flared base for safe and comfortable anal play. Crystal Jellies are made from non-phthalate body safe material which includes Docs Anti-bacterial Sil-A-Gel formula. Anal stimulation. Clean before and after each use with soap and warm water or toy cleaner.