Hydro Flask - 21 Oz Standard Flex Straw Cap - Mermaid Green size-us-7 this cap is both stylish

this cap is both stylish and comfortable

Ultra Black lenses for maximum shade and glare reduction

all while supporting local manufacturing

Various stain colors (may differ from product photo)

Hydro Flask - 21 Oz Standard Flex Straw Cap - Mermaid Green size-us-7 this cap is both stylishHydro Flask 21 Oz Standard Flex Straw Cap Mermaid Green Designed for easy everyday hydration, the Hydro Flask 21 Oz Standard Flex Straw Cap in Mermaid Green combines practical functionality with the brands trusted insulated performance. Crafted from durable stainless steel with TempShield double wall vacuum insulation, this bottle helps keep drinks cold for hours while remaining lightweight and comfortable to carry. The Flex Straw Cap provides