Stocking Stuffers - Kids&rsquo; Christmas Travel Mugs, 11 oz. (Set of 4) A great gift idea! 11-oz. travel mug holds hot or cold beverages and have fun Christmas designs. Inserts are removable so mugs can be easily customized with photos or drawings of your own. 4 - 11-oz. travel mugs with flip-top closures in 6 assorted Christmas designs.