The Hydro Flask 21oz Standard Mouth Bottle is the perfect everyday travel bottle. Use for the gym, a trip to the beach, or the daily commute. Keeping your fluid intake on the upside is easy when you’ve got this portable travel buddy. Whether you’re headed to the gym or a quick jaunt across town, you can easily take your refreshment with you. Product Information: Keeps beverages cold up to 24 hours or hot up to 12 hours Durable 18/8 Pro-Grade Stainless Steel construction Perfect for everyday use Reduce your single-use plastic usage Stone Colour: Stone,