Eureka! Riner +40 Degree Implosion Sleeping Bag Lightweight hybrid-style sleeping bag for warmer environments; rated for use down to +40 degrees F Hybrid-shape meets the needs of those valuing a roomy yet compactable sleeping bag Soft 50D polyester ripstop shell allows the bag to compact more fully Trapezoidal footbox construction; hood drawcord Carry weight of 2 pounds, 8 ounces