Christmas Gift Hot Bag Warm PCM Heating Collar Steel Sheet $ 8.92 Product information: Specification: SML Type/use: thermal insulation Product category: warm neck ring Heating mode: self heating Weight (including package): 120G Usage method: Gently break the iron piece in the collar to avoid scalding due to high temperature, It is recommended to use it with a plush cloth cover for better effect. Packing list: Heating collar * 1