Marmot Trestles 15 Women's Cold-Weather Mummy Sleeping Bag, 15-Degree Rating Weight - 1956g Materials - 70D 100% Polyester 2.2 oz/yd Liner - 70D 100% Polyester 2.2 oz/yd Insulation - Spirafil&#174; 60 Sizes - Reg: 66" / Long: 70"