Here's a closer look at the above Sonic & Tails large plushes, in the box for retail. It'll be a standard 'sitter chair' type open top box. The box appears to have a dot/sticker showing how Tails can fly Sonic around like in the games.
From the upper photo, it looks like a special/shine fabric may have been used for Sonic's shoes. His feet are good and large size...but his hands seem a little flat/flappy or overly simple. The legs also appear to widen at the ankle which isn't super great but the thing that stands out most is:
Why is Tails' head SO BIG!
It's gigantic! The top photo it could be poorly perspective but the bottom one and...gee, he's almost a 'chibi type SD little big heads'. However, it is otherwise cute, with properly shaped eyes, good bangs, glove cuff/shoe cuff detail.

Where are his tails?
You should be able to see his tails in this photo...a proper doll of him should have large and puffy well-shaped tails on display at all times because they are so important. The round icon on the box says "Copter Combo Sonic & Tails"