【Yu-Packet Post Mini】 This is the storage bag that came with a Uniqlo Ultra Light Down Compact Vest, size L. I thought I had lost it, so I sold the down vest itself, but it recently turned up. I only tried storing the vest in it once when I first bought it, and since I don't use it, it's been in storage ever since. It's very small. Please refer to the photos for the size. Thank you.