Newly Developed Mouth Plug There are three colors for

There are three colors for you to choose from

Weight: under 100kg

You can feel the breathing resistance by rotating the valve cover to close different numbers of small holes

and is easy to damage the membrane

floppy gloves - you bought all of them to turn your passive partner into a dog

Newly Developed Mouth Plug There are three colors forLatest research and development The lip design on the front edge ensures tightness, and the integrated breathing tube is safer. Made of medical grade ABS soft rubber Dedicated for vacuum bed and vacuum cabinet Breathing is smooth and unobstructed, and long term use will not cause oral soreness One piece molding, no leakage.