Kink Engineering

Back Zipper Entry - M2M Sleepsack


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This back-entry sleepsack is totally bespoke to you starting from your measurements to the final trim & finishes.

Explore in any color & thickness of our Radical Rubber sheeting.

3-way regular or 1-way locking back zipper(s) opens up this enticing encasement to slide into.


  • Internal sleeves: Enhanced arm constrictions. 
  • Electrical/ enema port: 1 or 2 “sleeve(s)” attached to 1 ¾” hole(s). Leave an order note for extras or specific placement.
  • Open penis gasket: A latex sleeve custom-sized to hug the penis similar to a condom except head is uncovered. Can be reverse inserted into a vagina similar to a female condom. We do not offer moulded penis sheaths at this time. 
  • Cock AND Ball Gasket: Custom-sized non-stretch latex cock & testicle(s) ring that sits on the pubic bone.
  • Genital Access: Regular or locking 9” zipper at the front.

Locking zippers are only available in black.  

After ordering, we will contact you to ask for the required measurements. Current production-time is 6 - 8 weeks for this one-of-a-kind experience.

**Any of our hoods are available made-to-match, or we can customize an attached sleepsack hood. Inquire about this option via message.  


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