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A lightweight, adaptable down quilt designed for comfortable three-season use
Thermarest says:
The perfect blend of comfort, functionality and packability, the Corus saves weight on the trail.
The versatile Corus™ Quilt offers essential comfort wherever you use it. Its perfect balance of functionality and warmth make it ideal for three-season backcountry adventures or for layering in colder conditions. Made with high loft, packable Hydrophobic Down and Box Baffled construction for retaining heat and excellent temperature regulation, the Corus offers a surprisingly liberating feeling of unrestricted movement throughout the night. The footbox can slip over your pad to eliminate drafts or over your feet for extra warmth.
Our Verdict
The Corus 32F uses 650-fill-power hydrophobic duck down with a 340g fill to deliver a balanced mix of warmth and packability, weighing just 597g. This level of down provides a solid warmth-to-weight ratio for summer and milder shoulder-season use, with a comfort limit of 0°C. It performs well within that range, though it is best suited to moderate conditions rather than pushing into colder nights. Perfect for summer, late spring, and early autumn.
The quilt design facilitates more unrestricted sleep than a traditional mummy bag. The box wall construction helps maintain loft and reduce cold spots by allowing the down to expand more effectively. A shaped footbox adds noticeable warmth, either wrapping around the feet or integrating with a mat to help limit drafts.
Ventilation is easy to manage with the open design, while the pad attachment system helps secure the quilt and improve thermal efficiency when temperatures drop. The lightweight fabrics keep pack size low without feeling overly delicate.
Overall, this is a well-balanced option for those prioritising comfort, flexibility and pack weight.
- Reviewed by Ultralight Outdoor Gear
Features
- Warm & Lightweight: 650-fill RDS-certified hydrophobic down keeps it light, compact and warm.
- Compact: Designed to easily fit into your pack.
- Box-Baffled Construction: Uses mesh walls to maximize down loft and minimize cold spots.
- SynergyLink™ Connectors: Integrate the quilt with a mattress for optimal efficiency and comfort; removable for versatility.
- Thoughtful Footbox: Precisely shaped footbox can slip over your pad to eliminate drafts or over your feet for extra warmth.
- Draft Protection: Full-perimeter side baffles and snap neck closure keep out unwanted drafts.
- Build a System: Pair with another Therm-a-Rest quilt, sleeping bag, blanket or sheet to build a layered system.
- Stuff sack and storage sack included.
Specifications
Regular
- Weighs: 597g
- Dimensions: 128 x 201 x 10.1 cm (49.5 x 79 x 4 in)
- Girth (Shoulder / Hip / Foot): 125 / 121 / 130 cm (49 / 51.5 / 51 in)
- Fill Weight: 340 g (12 oz)
- EN Comfort: 41 °F / 5 °C
- EN Limit: 32 °F / 0
- Packed Size: 17 x 25 cm (6.5 x 10 in)
Long
- Weighs: 633g
- Dimensions: 135 x 211 x 10.1 cm (53 x 83 x 4 in)
- Girth (Shoulder / Hip / Foot): 135 / 131 / 160 cm (53 / 51.5 / 63 in)
- Fill Weight: 340 g (12 oz)
- EN Comfort: 41 °F / 5 °C
- EN Limit: 32 °F / 0
- Packed Size: 17 x 25 cm (6.5 x 10 in)
Material & Construction
- Shell Fabric: 100% Recycled 20D Nylon Ripstop, DWR
- Fill material: 650-Fill PFAS-Free Hydrophobic Duck Down, RDS
