Zenbivy

2 entries here — 1 for on top of you and 1 for underneath, priced $159 to $289. The coldest-rated is the Zenbivy Light Quilt 25 at 25 °F maker's rating. The warmest pad is the Zenbivy Light Mattress at R 5.2. The lightest thing they make here is the Zenbivy Light Quilt 25 at 1 lb 6 oz.

Zenbivy Light Quilt 25
from ~$289
Quilt

Zenbivy solved the quilt draft problem differently from everyone else: instead of strapping the quilt to the pad, the quilt clips to a fitted sheet that is already on the pad, so the seal moves with you and there is a hood-like head end built into the sheet. It is the most bed-like sleep system in this catalogue. Zenbivy publishes a limit-and-comfort pair of its own — 25 °F and 35 °F for this model — but does not claim ISO testing, so treat those as the maker's figures rather than lab ones.

1 lb 6 ozno ISO rating

Best for: Quilt users who have never got the drafts under control

Full spec sheet
Zenbivy Light Mattress
from ~$159
Backpacking pad

Zenbivy's whole product is a bed rather than a bag: a mattress, a fitted sheet that clips to it, and a quilt that clips to the sheet. This is the mattress half. R-value 5.2 from real polyester batting rather than film means it is silent and warm on contact, and 23 ounces for that rating is competitive. The catch is that it is designed to be bought with the sheet and quilt, and buying just the mattress means paying for compatibility features you won't use.

1 lb 7 oz0.23 R/oz

Best for: Zenbivy sleep-system users, and anyone who hates pad noise

Full spec sheet