An X-large Tumbler Mug for Ice coffee or smoothie? Yes please! The Green Explorer Mug joins our line of Clear-Insulation products that provides insulation for your cold beverage and features a see-through window (so you'll know when you need a refill). The Explorer also features an easy sip lid and a securely stored reusable straw, with triple layer design for your extra frosty iced macchiato. The dual function lid fits both the large tritan body and the insulated sleeve that can easily be removed for an on-the-go hot travel mug.