Choose high-quality  Rubber (not latex)  materials, hand-made. 
 
The outer layer is made of harder rubber material, which enhances the sense of restraint and prevents the wearer from turning his head easily. The inner layer is made of soft neoprene material, which is not prone to discomfort when worn for a long time.
 
There are 2 optional versions of this product, the first is the version without collar, the second is the version with collar, Collars are available in a variety of colors.
 
 
The full set includes（with collar version）:
base mask x1   
rubber collar x1
face mirror mask x1
maskx1
eyes shade x1
mouth gag mask x1
mouth maskx1
Copper lock x6 （key x18）
 
The product comes with a matching copper lock, so no additional purchase is required.