HAHA! I've never shipped a pair of boots overseas (not yet). You'd be surprised how much you can pack into a Rimowa carry-on and a carry-on backpack, esp. if you use cubes. I take two pairs of shoes (wearing one pair) 2 jeans, 2 shorts, 7 underwear and shirts and a rain jacket. Staying at AirBnb means I can wash my stuff regularly. I hate checking bags.