casual waistcoats for layering -Glacier Tek Spare Cooling Pack Set for Flex Vest, Set of 12 Cooling Packs - Recharges in 30 Minutes, Maintains 59 Degrees for up to 2.5 Hours | "Explore Stylish and Comfortable Hoodies, Sweatshirts, Jackets, Polo Shirts & More!"

Made to fit the Flex Vest, the Spare Flex Vest Adult Cooling Pack Set helps ensure that cooling comfort is always at the ready. The set includes 12 GlacierPacks, six for the front of the vest and six for the back. The packs maintain a comfortable 59°F for up to 2.5 hours in 90°F heat. The cooling packs are powered by PureTemp phase change cooling technology, an all-natural, 100% recyclable material. The cooling material is hermetically sealed in a rugged, clear film, allowing for easy cleaning and sterilization. The packs recharge in about 30 minutes in ice water, one hour in a freezer and two hours in a fridge.