I have had a few people ask me about adding spikes to my chastities. I have come up with a spike strip for the Jail Bird. It is based off of the same idea as the anti pull out system but it uses spikes for CBT play. I have found that they are comfortable during the day but at night not so much. If you are being teased she will defiantly be in control. Sorry about the pictures. If you would like more information please go to my web site or ask questions here. Thanks!!!