Big Agnes Greystone Sleeping Bag 20 Degree – 600 DownTek, Rooibos, Long, Left Zip

Overview

The Greystone 20 Degree sleeping bag from Big Agnes blends lightweight design with reliable warmth, making it a versatile companion for late-season treks and cool-weather camps. Built with a contoured hood, a low-profile cordlock for one-handed adjustments, and an anti-draft collar, it invites you to rest easy whether you are under a starry sky or inside a tent after a long day on the trail.

Crafted from soft, recycled materials, this bag embraces sustainability without compromising performance. The shell and lining use GRS certified recycled polyester with a PFC-free water-repellent finish, while the 600 fill DownTek insulation provides warmth while resisting moisture. The down is 100% RDS certified, reflecting responsible sourcing you can feel when you settle in for the night.

Technical Highlights

• Lightweight, compressible design for backpacking and fast-moving trips
• Contoured hood and oversized anti-draft collar for added warmth and comfort
• Two-way, anti-snag zipper for smooth entry and foot venting on warm nights
• 600 fill DownTek with bluesign approved, PFC-free water-repellent finish
• 100% Certified RDS Down and recycled shell/lining for sustainability
• Includes storage sack and stuff sack; exterior loops for hang drying or storage

Ideal Use Scenarios

Whether you’re sleeping in a backcountry bivy, a cabin, or a family tent, the Greystone offers a balanced combination of warmth and weight. Its 2 lb 7 oz weight and the ability to compress to a compact 9” x 9” make it a practical option for hikers who value space on the trail and comfort in camp.

Should you camp with a partner, the bag’s left zip configuration pairs nicely with its right-side counterpart for shared warmth and a snug sleeping arrangement. Rooibos coloration adds a warm, earthy feel to your campsite setup, complementing natural surroundings while keeping you comfortable through cooler nights.

What You Get

• Warmth and comfort from 600 fill DownTek insulation
• Durable, recycled materials with a PFC-free water-repellent finish
• Practical features like a reversible zipper, draft protection, and easy airflow
• Flexible options for solo use or pairing with a partner

In short, the Greystone blends thoughtful design with responsible materials to support your outdoor adventures without promising guarantees—only the possibilities of a good night’s sleep in the wild.