There are a few hollow butt plugs out there, but none as stupid hot as PIG-HOLE…shaped so it fits your hole like it was custom fit…made from OXBALLS skin-flex platinum silicone--the only material that feels like skin, warms up to your body temp fast, has enough strength to keep your butt-pucker open, and is still soft enough inside to fuck…and fuck… and fuck… Total Length: 14 cm (5.5”). Total Circumference: 34.3 cm (13.5”). Usable Length: 11.4 cm (4.5”). Smallest Usable Circumference: 17.8 cm (7”). Largest Usable Circumference: 24.1 cm (9.5”). Inside Diameter: 4.44 cm (1.3/4”). Weight: 298g (10.5 oz).