A great big bag!
This is an all-cloth bag from the 1990s, which is a little uncommon because such re-useable "eco bags" were not really a fad/trend at the time. It's all light blue, with tough handles in the top center. It has the main image of Sonic & Tails with a simple green triangle background. The Segasonic logo is at the bottom, and there are 2 more poses for Sonic at the top in each upper corner of the bag.

The item that's on it there is a plastic lighter, so it kind of gives you an idea of the size. A re-use-able bag is always handy, and this one's got great classic style. It is too bad that it's uncommon.