Passport: check. Toothbrush: check. Lovely, low-maintenance cap-sleeve knit tee with plenty of eco-cred: check. Palmilla makes the short list of travel essentials thanks to its soft, heathery good looks, quick-drying, wrinkle-free prowess and just enough of a sleeve to be culturally versatile. Plus, it packs up so nicely, you'll have room for a couple of non-essentials in your bag too.