Instead of just plugging your butt, why not open it at the same time? The tunnel hole goes all the way through the toy, giving your partner(s) a good view and clearing the way for ______ (use your fantasy to fill in the blank). The material is firm enough to insert easily while flexible enough at the same time to be comfortable and stay in place.
The wide base makes this plug completely buttsafe.
Inner circumference: 6,3 - 9,9 cm
Circumference: 17,5 cm
Material: silicone and TPR blend
Lube: Hybrid, Water based