The Women's Trestles 15 Sleeping Bag from Marmot is a 15 degree mummy bag that will insulate you during 3-season use with Marmot's own Spirafil 120 synthetic insulation. A great all-around bag, the Women's Trestles 15 features a women's specific fit, a full side zip, a hood draw cord, and a snagless draft tub. Marmot includes a compression stuff sack with the Women's Trestles 15 Sleeping Bag.