COPCO/WILTON-Lock N Roll Tumbler. This double-wall tumbler features an innovative flexible straw that flips up when you're ready for a drink and locks back in place on the screw-on lid when done. It has a 16-ounce capacity and is designed for use with cold beverages only. This package contains one reusable tumbler with lid and straw. Available in several colors (each sold separately). Dishwasher safe. Imported.