Sleeping bag

[DownEaster]

Klymit Static V isn't the same as a Klymit Paraframe (or something-frame). The Static V has grooves but they aren't intended to allow your sleeping bag to expand, that is just an added benefit.

Klymit says they are intended for that purpose. Here's a quote from Klymit's web site (for the original Static V pad):

Deep Weld Patterning: Unlike traditional pads that flatten the bag’s fill, Deep Welds create expansion zones that allow your bag to fully loft beneath you for improved thermal comfort.

[DuneElliot]

As someone who actually USES a Klymit Static V Lite Insulated in the field I can attest to their comfort and haven't found them cold at all, even below freezing. I did make the mistake of taking my hammock quilt (way too narrow) to the WRR in September and got chilly. I have determined I much prefer a good sleeping bag with a hood (to keep my pillow in place) for anything below 40-45* and recently invested in a WM Versalite which I absolutely love. Above 45* I quite like my quilt.

Of course, if I'm hammock camping then my quilts are my go-to option and I have stayed plenty warm with 10* quilts into the 20s