This modern umbrella is actually really cool. It has panels with Sonic, Knuckles & Shadow on them in full color. Then, it has blue panels with Tails, Shadow, Knuckles AND Dr. Eggman line-art, with their names. Look at the inset, even the handle has Sonic detail. There's a leaping Sonic art in the clear handle base.
This measures about 28 x 20 inches when open. It is listed as 'kid size'. It should be about 12.99 when you see it for sale. (Where can you buy this?) It is being sold by CuteSense which is NOT linked here because they sell licensed and bootleg goods along-side of eachother. It is likely to be by Accessory Innovations. Write in if you know for sure where to get it at retail.