Buy one and done. That’s the thinking behind this ridiculously over-designed mug that will most likely outlive you. The American-made MyMug is made of an advanced composite that’s indestructible and to prove it, they come with a 100-year guarantee. Available in stackable 4, 8, 12, & 16 ounce sizes, they are insulated, microwave & dishwasher safe, and made with 100% FDA–approved & BPA-free materials. A funded Kickstarter.