How to pick✔️ 아이워머 = single-use steam eye mask, 냉온 찜질팩 = reusable hot and cold pack, 어깨 = shoulder. The shoulder pack is ₩3,000 with 1,340 orders. Packs need a microwave or freezer, so check your hotel first, and follow the pack instructions. Eye warmers are one use each, so buy one per night. They barely take up space in your bag.