These 3-season backpacking bags are loaded with features, including Thermo Gills™ that help regulate temperature during the night, Blanket Fold™ that provides tucked-in comfort, and a waterproof/breathable footbox to withstand tent condensation. Left-sided zippers on Men’s and right-sided zippers on Women’s allow Disco™ to zip together for a double version of these favorite sleeping bags. Nemo Disco Men’s Down Sleeping Bag Regular/Long (-9C/15F)