The Hydro Flask 21 oz (621 ml) Standard Mouth with Flex Straw Cap is an insulated bottle perfect for any occasion, from the office to mountain or climbing outings, featuring a convenient spout cap.

Made from 18/8 pro-grade stainless steel, it is highly durable and ensures a pure taste with no flavor transfer. The double-wall vacuum insulation keeps temperatures stable for hours: cold drinks stay icy cold, and hot drinks remain warm!

The vibrant colors of these bottles are not only eye-catching but also functional. The powder coating makes them easier to grip, less slippery, and more pleasant to the touch.