Therm-A-Rest Corus Quilt

A quilt eliminates the back insulation found in a sleeping bag, which is typically compressed and ineffective when you lie on it. By removing that material, the Corus saves weight and bulk while giving you more freedom to move, mimicking the feel of a comforter at home.

The Corus is designed to prevent drafts through a combination of perimeter side baffles that tuck around your body and a snap-closure neck that seals in heat. While it lacks a hood, it is highly effective at trapping warmth when paired with a proper sleeping pad and a warm hat.

SynergyLink connectors are straps that secure the quilt directly to your sleeping pad. This prevents the quilt from sliding off you during the night and helps seal the edges against the pad to stop cold air from creeping in.

The Corus is rated for three-season use with a temperature rating of 20 degrees Fahrenheit. It is best suited for spring, summer, and autumn adventures; for deep winter conditions, you would likely need a higher-rated, full-coverage sleeping bag.

The hydrophobic down insulation is treated to resist moisture, meaning it retains its loft and thermal efficiency longer than untreated down if it gets damp. However, it is not waterproof, so you should still take standard precautions to keep your sleep system dry inside your pack.

Yes, the footbox is versatile. You can leave it open to vent heat if you get too warm, or cinch it closed to create a secure, insulated pocket around your feet for maximum warmth.