All of the information you have requested is given in the product description below the product image, I have clarified these points for you below.
The gloves utilise heat packs stored inside zippered pockets.
* "Uses two heat packs (included) in a zippered heat zone pocket"
These are single use only and must be replaced after use.
* "Reusable - No"
The code for replacement packs is also included the product description.
* "No need to rush around the packs can last for up to eight hours and are replaceable (Two included, replacement Order Code A84WH)."
I have also included a clickable link to the replacement packs for your convenience.
Date published: 2016-11-04