Product information:

Material: high elastic webbing
Washing and care requirements: Please try to use hand washing as much as possible. After washing, please dry the metal parts to avoid prolonged humidity.
When not in use, store in a dry and dark place.

size:
Neck ring: 39CM
Belt: 75CM

Note: 

The above measurement size is the size of the adjustable buckle to the largest flat (without stretching). There is still 8-10CM stretching space for the webbing.
The size is manually measured. All sizes may have an error of 1-3CM, which is normal. Hope to understand