Made by safety and durability food grade 304 stainless steel with 2 layers, protecting the water flask from oxidation and flavor transfer. It can keeps your beverage hot or cold for longer periods of time, keeping your cup of coffee hot while you enjoy your morning campfires. The mug has a carabiner clip handle with snap hood design which allows you to conveniently attach the mug on your backpacks or belt buckle. Leightweight and portable design , great for travelling, camping, climbing, hiking, backpacking. Customized your imprint is available.