So many pockets! Fuzzy warm fleece exterior. Breathable liner. The two side pockets are even roomy enough for a magazine, water bottle and more! Another pocket holds your iPod and has a pass-through for your headphones. The lumbar pocket in back turns into a storage pouch that lets you use this vest as a travel pillow. A Zip It ID window makes it easy to show ID before boarding. And under-arm thumb hooks that make it easy (and secure) to sleep inflight with your arms folded over your chest. This vest really does have it all. See sizing information below.