The Sierra Designs Polarguard 30 Sleeping Bagbag is a comfortable choice for 3-season backpacking and camping. Durable and efficient Polarguard(R) 3D insulation offers a high warmth-to-weight ratio and continues to insulate even if wet. Extremely durable polyester taffeta shell has a DWR (Durable Water Repellent) finish; comfortable, moisture-wicking polyester lining warms up fast. Standard mummy hood with draft collar cradles your head with warmth and features fleece drawcord casing that is soft against your face.