design, applied ergonomic principle, to break traditional conception. Instead of blocking the mouth like traditional ball gags, UPKO invisible mouth gag keeps the mouth open and the tongue can easily move.
This ball gag has passed the hygiene test of MA, ilac MRA, CNAS and other authoritative agencies, promising safety in the mouth.
Material: silicone, leather, zinc alloy
Silicone gag part (one side)
Length: 3.66 in / 9.3 cm
Width: 0.91 in / 2.3 cm
Adjustable: 15.75 in / 40 cm - 18.5 in / 47 cm