Cooler Bag Knowledge Base

Guides written from the factory floor: thermal physics, regulations and sourcing, minus the fluff.

What actually decides ice retention: insulation, pre-chilling, pack-out and opening habits.

Safe storage windows, what to look for in a cooler, and how to transport milk with confidence.

TSA and airline rules for coolers, ice, gel packs and dry ice, for carry-on and checked bags.

Practical, physics-backed ways to keep food cold at picnics, on delivery routes and in transit.

What each layer of an insulated bag does, and which material choices matter for buyers.

A buyer's shortlist of cooler bag manufacturers and brands, and how to pick an OEM partner.

Try the Dry Ice Calculator

Volume, duration and ambient heat in; a working dry ice estimate out.