Docking sleeve
A docking sleeve is a sex toy which is sometimes used to aide the sexual act of docking. It is a cylindrical device, which has both ends open. Two men insert their penises into either end and gain pleasure from this. The sleeve is particularly useful for docking between two men who have both been circumcised, where it is used as a replacement for foreskin.
The latest styles of docking sleeves are made of emulated skin, including brands such as Cyberskin.