Green 16oz Insulated Stainless Steel Travel Mug Z444 Keep Calm and Love Penguins Green 16oz Insulated Stainless Steel Travel Mug Z444 Keep Calm and Love Penguins 16 oz. travel mug with stainless steel outer wall, color accents, and matching insulated liner Double wall plastic inner liner insulation Smooth curved body for easy grab-N-go handling Plastic lid with a spill prevention slide lock