The Mountain Hardwear Lamina sleeping bag is lighter than before and covered with synthetic insulation which will warm us in cold and damp weather. Standard cut "mummy" warm effective and adapted to the female body and zoned insulation maximizes warmth where we need it most and at the same time reduces weight there where we need it less. We also like this bag for wet conditions because the durable water-repellent finish keeps moisture out and synthetic filling is a safer choice than down when there is a risk of rain, condensation and sloppy camping.