These are Sonic themed disposable hand-towels.
They may be either wet or dry wipes. There is a dry-wipe with the exact same theme as the bottom one. These could be found at Segaworld Japan, in the bathroom. They were likely found elsewhere too. Look at the neat dancing Sonic stock art on the top one, with planets & stars background. The bottom features Sonic line art, including the somewhat uncommon 'sitting Sonic'. These are def. something cool to see!