Thumb Score: +17

ENCOOL via Amazon [amazon.com] has for Prime Members: 24-Oz ENCOOL Insulated Stainless Steel Water Bottle Tumbler w/ Straw (various colors) on sale for $16.99 – 50% off when you apply promo code SXO79C6K at checkout = $8.49. Shipping is free.

Note: Promo code applies to various colors & sizes. Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.