Timmermade - Wren False Bottom Sleeping Bag

You make a good case for functionality with the 2-temp-range construction of many bags. I had not realized that was a thing. I would agree with you that pad straps are bunk. I gave up on those years ago. I tend toward quilts that have false bottoms or false bottom flaps, like [this one](https://timmermade.com/product/coati-quilt/). Curious that this same maker also does bags that are kind of a hybrid with a quilt, like [this](https://timmermade.com/product/wren-false-bottom-sleeping-bag-narrow-torso/), or even [this](https://timmermade.com/product/serpentes-false-bottom-sleeping-bag-mummy/) which take the false bottom further.

Outside of the Serpentes the timmermade line has been updated in recent years to be a more true comfort rating I believe. You can read about it on the website. I think the Wren is more true to the comfort rating, while still having the false bottom system Edit: I’m realizing you’re talking about venting in warmer weather, and it is a downside but can be worked around if you let parts of your upper body out. You do lose being able to stick a leg out easily though. I believe Dan will make false bottom bags with zippers if you want to though

Checkout the [false bottom sleeping bags](https://timmermade.com/product-category/sleep-systems/down-sleep-systems/) from Timmermade. The differential baffle design and false bottom design is the best warmth to weight ratio bag I have used and seen. It is paired well with a water bear hood. The false bottom of a Serpentes bag reduces the overall weight of the system by approx 10% over an equivalent size without a false bottom, depending on the dimensions and fill quantity. Dan is very helpful and you can customize the fitment and materials.

Fellow rotisserie sleeper here. Mostly camp in my hammock but also go to the ground when I have to, e.g. routes above treeline. I’ve done quilts and mummy bags on the ground, and I don’t like either in their traditional forms. A third viable alternative is what basically amounts to a hoodless “bag” of some sort: a false bottom bag (Timmermade Serpentes/Wren), a zipperless bag (Nunatak Sastrugi), or a fully zippered quilt (Feathered Friends UL Wide Flicker). You have the option to select from a variety of sizes to suit your needs especially with Nunatak and Timmermade, but be aware of the lead times and specific ordering windows that will require some patience and diligence on your part. I find I sleep less interrupted in these types of bags on the ground, while traditional top quilts do just fine in a hammock system with an underquilt.