It uses the waterproof and breathable Täsmä material that was used in the TB Jacket/Tsurugi Jacket from FW21~FW24, and is seam taped, so just like your clothing, it will protect your important food and luggage from rain and snow. It has a larger capacity than it looks, and can fit luggage for a one-night stay, but the wide handles mean that even heavy luggage won't strain your shoulders. You can carry it around as an eco-bag on a daily basis, and then put your work bag inside to protect it from sudden rain.
