Core Sheet (30D/50D, 650FP)

Can only give 4 stars only because I don’t believe there is a perfect system but it’s definitely something close. The core sheet has taken comfort to the next level for sleeping outdoors although you have to get the whole sleep system in order for it to work. It’s definitely worth the purchase if you want comfort while camping.

25° quilt was COLD at lower 40° Temps : (

All the down in the sheet is in the hood. The sheet is just that, a sheet with no down fill. I'm a hot sleeper but I found myself requiring pants, socks, T Shirt, and a fleece while sleeping at forty degrees (in Colorado August 2024 @ 11,000 feet elevation. I forgot my beanie so I had my head under the quilt. You will need some insulation under you in order to combat the cold despite my ZenBivy setup being advertised as a 25° sleep system. This is what I used: Core Sheet. Down / 25". Light Quilt Convertible. 25° Down / Regular At 40° temps, definitely bring a beanie, a thin pad for on top of your mattress, and have layers handy to put on at 2AM when you wake up cold. I don't see how this is rated for 25° unless you have some serious layers on you. Beware of their 14 day return policy. If they stood behind their product they would give buyers FAR more time to return.

What’s not to love? This sleep system has virtually no flaws. The attention to detail and comfort is amazing. I love how I can use the same sheet and pair it with different quilts depending on the season and temps. Fit great on my Klymit pad too!