Big Agnes Greystone 30 Long Down Sleeping Bag

The Big Agnes Greystone 30 Long is a high-performance down sleeping bag designed for backpackers and campers who demand warmth, comfort, and reliability in a lightweight package. Featuring 650-fill DownTek™ water-repellent down insulation, this mummy-shaped bag provides excellent thermal efficiency while resisting moisture. The long length accommodates users up to 198 cm (6'6"). With a full-length YKK #5 anti-snag zipper, insulated draft collar, and draft tube, it seals in warmth. The box baffle construction prevents down shifting, ensuring consistent loft. Includes a mesh storage sack and nylon stuff sack.

Advantages

DownTek™ water-repellent down maintains loft even in damp conditions. The traditional mummy shape reduces weight and maximizes heat retention. The anti-snag zipper and draft system prevent heat loss. Lightweight yet durable nylon ripstop shell and taffeta liner offer comfort and longevity.

Suitable for

• Backpacking and camping in temperatures down to 30°F (-1°C)
• Sleepers up to 6'6" tall
• Users preferring a mummy cut for efficient warmth

Key specifications

• Temperature Rating: 30°F / -1°C
• Insulation: 650-fill DownTek™ Water Repellent Down
• Fill Weight: 624 g (22 oz)
• Shell: Nylon Ripstop
• Liner: Nylon Taffeta
• Shape: Traditional Mummy
• Max User Height: 198 cm (6'6")
• Shoulder Girth: 168 cm (66")
• Hip Girth: 152 cm (60")
• Foot Girth: 107 cm (42")
• Zipper: Full-length YKK #5 Anti-Snag, Left
• Construction: Box Baffle
• Draft System: Insulated Draft Collar and Draft Tube
• Includes: Mesh Storage Sack, Nylon Stuff Sack

Recommendations

For optimal performance, store the bag loosely in the mesh storage sack to maintain loft. Use a sleeping pad for insulation and comfort. Avoid compressing the bag for extended periods.