My experience: My spouse came down with a nasty stomach bug shortly after this duvet insert arrived, which put me on sofa duty for several days. Given that I was suddenly in need of clean, virus-free bedding, I decided to test this duvet out on its own from the couch—no cover, no top sheet, nada. Despite not getting its maiden voyage under ideal conditions, this duvet held up beautifully.
That merino wool layer is the secret sauce of this duvet—Casper touts its ability to wick away humidity and keep you at a comfortable temperature while you sleep. I slept next to an open window (with cold February air blowing in) and a steam radiator, and the duvet kept me perfectly cozy. Not too hot, not too cold, and, though this was the “lightweight” version of this duvet, there was plenty of fill to squeeze. Once my marital bed was safe for use again, I paired the duvet with the Parachute Percale Duvet Cover and Percale Sheets. Overall, the bed looks uniform—no lumps or bumps—and honestly, at times, a little too inviting!
The bottom line: I loved this duvet. Even though it’s lightweight, I think it might be my new year-round comforter. (New York City heating is no joke!) If you’re on the fence, Casper offers a 30-day trial window, as well as free shipping and returns.
Tester: Audrey Lee, commerce editor
My sleep preferences: I always sleep with some sort of covering. I like minimal and cooling ventilation for summer, and I need all the layers for an extra toasty slumber in the winter.
About the brand: Any conscious shopper will be happy with Coyuchi, whose ethos is built around organic materials, fair-trade sourcing, and products that are both functional and elegant. The brand holds itself to the strictest standards of environmental and social responsibility, with constant innovations that include plant-based softeners, wastewater recycling initiatives, and circular material solutions designed to combat textile waste.
Options available: Coyuchi makes lots of duvet inserts, including climate-friendly designs, wool covers, and ones with synthetic fills. This duvet is down-filled with material sourced in the US and a 100% organic cotton shell.
Care instructions: The brand recommends always using a cover to protect your comforter from body oils. Other than that, the cover only needs a wash once every two to three years (unless any big messes occur). You can machine-wash on delicate using warm water and mild detergent, then dry on low heat (even if the cover feels dry, the brand suggests leaving it in a little longer to prevent mildew from forming). Then, air-dry for an additional 24 hours to release any moisture.
