Masturbation sleeves are male sex toys that are used for self-stimulation. They are typically tube-shaped and made of a soft, flexible material such as silicone or TPE. The user inserts his penis into the toy and moves it up and down to experience pleasurable stimulation. Some sleeves are designed to imitate the sensation of penetration, while others feature textures or ridges for added stimulation. Masturbation sleeves can be used with or without lubricant and come in a variety of sizes and designs to suit individual preferences. They are an easy and convenient way for men to experience sexual pleasure on their own, and can also be used as part of couples play.