Male Masturbator Clear Backdoor sleeve. The Realistic Backdoor Squeezable and Textured Stroker is a dual density transparent stroker that mimics the look and feel of a butt. The clear non-phthalate material lets you see yourself stroke, while the included renewing powder and travel bag help keep your stroker dry, clean and always ready for action! See yourself stroke. Made using body safe materials Thermoplastic Elastomers TPE.