These are the "YETI of cups". Often imitated, but never duplicated Tervis Tumblers. Your YETI® Tervis Tumbler® is nearly indestructible and keeps ice longer, just like a YETI®. Great at keeping your cold drinks COLD and your hot drinks HOT. - Don't sweat.- Fit in standard cup holders.- Dishwasher safe.- Made from double-wall, vacuum sealed construction. Available in both 16oz and 24oz sizes. Also available is the optional snap-on lid.