Arctic Zone® Titan Thermal HP® Copper Tumbler 20oz Color:Gray our leading technology will change our leading technology will change the way you charge Front straps adjust to secure blanket or towel Constructed from durable 18 8 grade stainless steel Keeps drinks hot for eight hours or cold for 24 hours Wide mouth makes pouring easy and comfortable Seamless liner gives a high perceived value Condensation free powder coating is scratch and fade resistant Laser engraving available Its double wall stainless copper vacuum construction is designed for durability while its condensation resistant exterior gives you a comfortable grip