2018 Rare Pottery Barn Space Ship Aliens Hot/Cold Food Storage Thermos Navy Gray. This rare 2018 Pottery Barn kids' thermos is perfect for keeping your child's food hot or cold. Featuring a fun space ship and aliens theme, this thermos has a screw lid and measures 4.5 inches in height and 3.5 inches in width. It's great for packing lunch for school or taking on a family outing. The navy and gray color scheme adds a stylish touch to this practical, like new item.