Size options: Choose from 5 UK sizes - see full details for measurement guide. Christmas Gonk jumper: Grab yourself a Christmas Gonk jumper. Colour options: Choose from 7 colours - see full details for list. Festive: Show your holiday spirit with this fun, decorative jumper! Material: Made from a blend of 65% cotton and 35% polyester. Christmas Gonk Jumper | Black | Living Social