Hydro Flask 21 oz Lightweight Standard Mouth with Flex Cap Trail Series – Obsidian

Brand: Hydro Flask

Features:

Capacity: 21 oz

Color: Obsidian (sleek, metallic black)

Lightweight Trail Series design – 25% lighter than standard bottles

Standard mouth for easy drinking and pouring

Flex Cap with perforated strap for weight reduction

TempShield™ double-wall vacuum insulation

Keeps beverages cold for up to 24 hours, hot for up to 12

Durable pro-grade stainless steel construction

BPA-Free and dishwasher safe

Description:

Engineered for adventure, the Hydro Flask 21 oz Lightweight Trail Series in Obsidian is built to go further with less weight. Its rugged, ultra-light design and premium insulation keep your hydration light and efficient—ideal for hikers, climbers, and outdoor explorers.