Sigmund is so named as it is designed to somewhat enter the Sigmoid colon on most. A nice oblong head and shaft gives you the flexibility in play to turn it and encourage bending in one way, but not the other. Nice tapered head for coaxing open those rings. Easy and gentle when going this deep!
Everything made by SquarePegToys is crafted entirely in the USA from only US sourced, 100% Platinum Grade Silicone.
Do not store next to or on vinyl or other rubbers with a strong odor as their plasticizers will harm the silicone.