2) The insulated pockets inside the vest are compatible with your choice of cooling packs:
Kool Max® Frozen Water-Based Cooling Packsrequire access to a freezer and offer the highest level of cooling energy for up to 3 to 4 hours. It's science! It takes more energy to charge these packs in a freezer and in return, the packs offer greater cooling energy for a longer time.
Cool 58® Phase Change Cooling Packs fully charge (freeze) at 58ºF (14.4°C) and provide a comfortable, constant cooling temperature of 58ºF for up to 2 to 3 hours. Ideal choice when freezers are not available; these packs can be activated in 15 to 20 minutes in a container of ice water!
You have the option to add an extra set of cooling packs with your vest. You may want to order both types of packs for flexibility on-the-go!
3) Which fabric would you prefer?
Cotton: lightweight and breathable 100% cotton twill