Likely to be the first Sonic themed knee sock! These knee high socks are somewhat interesting. They're all blue, with stitched in (as in, the design is a part of the actual weave of the fabric) classic forward facing Sonic heads. His spikes aren't visible, & putting the sock on a leg makes the face a bit oddly shaped. Likely to be a BioWorld item, but not confirmed. Found at Spencers in 2012 for about 5.99