For a limited time, this 20oz Wide Mouth Insulated Klean Kanteen drops from $29.95 to $18.99 at BuyDig.com. Even with $1.95 shipping, this saves you $9 off the regular price, and it's the lowest total price we could find by $4. It's made of 100% food-grade stainless steel, has vacuum insulation, and is designed to keep contents warm for up to 6 hours, or iced beverages cold for up to 24 hours. Plus, it's BPA- and phthalate-free. There is no sales tax.