Sunvalley Brands via Amazon offers the Vava 17-oz. Stainless Steel Water Bottle in Black for $11.99. Coupon code "DLNS8HJ4" cuts that to $9.99. Plus, Prime members receive free shipping. That's $20 off list and the lowest price we could find. It features double-walled vacuum insulation that keeps liquids hot for up to 24 hours. Deal ends October 31.