Whether you’re hiking in the heat, burning from a workout or sweating a presentation, coldfront, the world’s first personalized cooling system with recooling technology, can give you quick relief. Like an ice pack, it’s compact and portable. Unlike an ice pack, it stays cold for 12 hours without becoming a drippy mess. Just store the stay-soft palm packs in your freezer, transport them in their carrying case and break them out when you need to beat the heat.

$80, www.mycoldfront.com