The cooling duration of the packs will vary depending on the person (or dog) wearing it, the activity they are taking part in and the ambient air temperature.
The packs are easy to energise, maintain and store. Following this basic guide, and with proper care, the packs should last for many years.
Energising
All the cool packs can be energised in a domestic fridge or freezer in approximately 30 minutes. They can also be energised in a cool box, or any other environment, which is colder than the temperature the pack is set at (typically 10°C or 25°C), including for example, an air conditioned room. When being energised, the packs should be as flat as possible, to allow for easy insertion into the carriers.
Using the Vests
Once the energised packs have been inserted into the carrier, the carrier should be adjusted at the shoulders and mid-chest to ensure a snug but comfortable fit. The packs are initially stiff when the vest is first put on, but as they start to work, they will begin to soften and mould to the wearer.
Using the Seat
As the energised packs are fitted into the seat, they will also feel quite stiff. But as you start using the seat, it will begin to soften and mould to suit the way you sit on it. It will become comfortable within a few minutes of use.
All of the packs will need to be re-energised once all of the white solid has become clear fluid. As long as there is a small clump of white solid remaining (about the size of a 5p piece) the pack is still working. When less that that is left, it should be re-energised.
The packs can be stored in a fridge, freezer or cool box so they are ready for use at any time.