Shown inside out for viewing. Shaft is dropped thru a C ring sewn into a panel attached to the inner seams of fly. Allows haft access thru fly. Ball cage for added security. Packer is against body.

All in One insert

Split back for STP access with sewn in front panel C ring for shaft security and use. Jock Pocket is similar but packer drops in top, no split back.
Drop C ring with ball cage All in One insert
Free Ball Insert