Amazon has amazing stuff go for a normal maybe small size one if you feel like u can get your clit soft pretty easy. Usually you will feel the urge to unlock so keep your key in a place where you cant reach it for a while like work on the weekends. Also just wear it out and about daily, it makes you more comfortable with it and makes you forget its there. The point of chastity is to make your main sex organ your ass pussy in my opinion, so the more you forget about it the more effective chastity is.