Stay at a hotel and you can use the plush terry robe. Stay with friends and you make a mad dash from the bathroom to the guest room in a towel (praying all the while that you're still PG-13). TravelSmith's ultrasoft microfiber robe is machine-washable and folds into a nine-inch-square zippered pocket, making it a carry-on shoo-in. Available in lavender (shown), peach, and light green. TravelSmith microfiber travel robe, $69, 800-950-1600, www.travelsmith.com.