Kids The Grinch 15 Days of Socks Advent Calendar. Bring cute Christmas style to your kids festive wardrobe with this The Grinch 15 Days of Socks Advent Calendar. Crafted from lightweight fabric with a hint of spandex, these socks are sure to keep their feet comfy. This advent calendar includes four pairs of crew socks, four pairs of quarter socks and seven pairs of no-show socks, each featuring the Grinch, Max and other Grinch characters and text to make their countdown to Christmas even more exciting.