You can order “jock” type ass straps with the chastity jock initially or later if desired.  The jock straps are trim-to-fit and therefore can only be used with one submissive or submissives of the same size. These straps are great for allowing easy use of the submissive's ass - and for making the ass look great.  A flathead screwdriver is required to swap between T/Jock type straps.  Be careful to attach the straps to the bottom of the tab on the cup (to prevent chafing) and to leave the screw head facing up - to make it difficult to access while worn.  More details about the chastity jock found here.