Walmart offers the Contigo Autoseal West Loop 16-oz. Travel Mug
in Monaco, model no. WLB100J01, for $11.77
charges the same with free shipping for Prime members.) That's the lowest total price we could find by $5, although we saw it in another color for a buck less in December. It features double-wall, vacuum-insulated stainless steel that keeps beverages hot for four hours or cold for 12 hours. The lid is made of BPA-free plastic.