The ASPEN 40 oz Insulated Straw Tumbler is the perfect on-the-go hydration companion to take with you anywhere you go! This stylish and convenient 40oz Tumbler with straw was designed with triple wall insulation, meaning it can hold ice up to 48 hours and keep drinks icey cold all day long. The ASPEN Insulated Tumbler has all the features you need - It's built with thick 18/8 stainless steel, it's dishwasher safe, BPA and PFAS free, cupholder friendly, and includes a free extra straw and cleaning brush. Even better it's a purchase that gives back to someone in need. Every GROSCHE product you buy funds 50+ days of safe drinking water for someone in need through the GROSCHE Safe Water Project. Together, we're making a difference.