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Amazon.com [amazon.com] has 18-Oz Hydro Flask Stainless Steel Insulated Standard Mouth Water Bottle w/ Flex Cap for $ 18.64. Shipping is free w/ Amazon Prime or on $ 25+
18-Oz Hydro Flask Stainless Steel Insulated Standard Mouth Water Bottle w/ Flex Cap (Black) $18.65 + Free Shipping w/ Prime or on $35+