The Backside 800 0° Hybrid Sleeping Bag is a high-quality, mummy-shaped sleeping bag designed for outdoor enthusiasts. With a down/synthetic blend insulation type, this sleeping bag provides warmth and comfort in colder temperatures. The size is large for a comfortable fit, and the polyester shell material is durable and waterproof. Its stylish black/grey color and unisex design make it a versatile option for any camping or hiking adventure. With an R-Value of less than 2, this sleeping bag is perfect for 4-season camping, ensuring a cozy night's rest in any weather conditions.

This is a new bag, never been used. Was my father's bag so don't know much about it. see pics for specs and details.