Personalize this unique color-changing mug with the image of a white tent in front of a mountain range and the inspiring text "HIKE more WORRY less." This special mug is perfect for hikers and nature lovers of all ages. It's made of high-quality ceramic with a glossy finish, and it's both lead and BPA-free. The heat-reactive design reveals your custom design when hot liquid is added, and it returns to its original black exterior and white interior when it cools down. The C-shaped handle helps keep a sturdy grip. It comes in one size – 11oz (0.33l) – plenty for that big morning cup of coffee or tea. Hand washing is recommended for longevity.