To my surprise, it came with a lock and key, which is a great addition; the silicone material is smooth and feels nice in the mouth and very comfortable. it’s also cute and is perfect for any BDSM scene. I used this along with the anal hook and hemp rope, and it was perfect for the scene we had. It’s also very easy to clean the “bone.” I rate this five stars ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ it’s better than all the other gags I have so far, definitely love this gag bone.I recommend it for any pup, submissive or bottom.