Kayu 15 Sleeping Bag: 15F Down

The Kayu series consists of Nemo’s ultralight bags for backpacking, and although it’s ultralight, the Kayu 15 Sleeping Bag is packed to the gills with features. Its 800 fill-down insulation has one of the highest fill ratings to bring warmth without the weight, and Nemo treated it with Nikwax for hydrophobic properties that help the down retain its lofty warmth in moist environments. The shell and lining are also treated with durable water-resistance, and the hood and footbox have Osmo waterproofing for extra protection from wet weather and damp tents. The Kavu also features Nemo’s clever Thermo Gills that drastically amplify ventilation for sufficient thermal regulation if you get too warm.