Swimmer Joeys don’t have a hole so your packer is better protected from harsh chemicals (not having to rub against the fabric in chlorine conditions). They work with any packer. Quick-drying mesh front (double-wall construction) and back Instead of a hole, Swimmer Joeys have an inner (mesh) liner for added structure and stability Locking head pin (nickel and plastic) Machine wash cold, tumble dry (remove pin before laundering) Dimensions (approximate since Joeys are not factory-made) One size (mesh stretches to accommodate any size packer) 4”x7” Some prosthetics are prone to color transfer.  This will not affect function at all. Wash your Joey before packing. Transguy Supply is not responsible for wear on packers. *All Get Your Joey products are handmade by LGBTQ people in Canada who are paid a fair wage.