The NEMO Riff Women's 30 is the warmer, lighter sibling in the Riff line, built for mild three-season nights rather than shoulder-season cold. ISO testing puts comfort at -1°C and the limit at -7°C, and at 990 g total weight with 480 g of 800-fill-power hydrophobic duck down, it reaches a warmth-to-weight ratio of about 7.1 and roughly 141 g per degree of comfort - noticeably less efficient than the Riff 15's colder-rated fill, typical for warmer bags where shell weight is a larger share of the total. The Spoon-shaped cut still gives side sleepers room at the knees and elbows without the mummy taper of a men's bag.
Unlike the 15, this bag skips the draft tube along the zipper, relying on the draft collar alone, which keeps weight down but means less sealing against drafts at the lowest end of its range. A right-side zipper lets it couple with a matching men's bag. Fits users to 167 cm. It suits summer and early-autumn trips where the priority is a light, women's-specific bag rather than deep-cold performance.