This sleeping bag is incredibly comfortable and warm. Paired with my Topo Deluxe, it kept me cozy throughout the night. A great feature is the ability to secure it to your pad, so it stays in place without slipping or bunching. The Big Agnes Anvil Horn 15° is a technical down sleeping bag featuring the integrated Flex Pad Sleeve, which accommodates multiple pad widths and ensures you stay centered on your mattress throughout the night. Insulated with 650 fill DownTek™ water-repellent down, it offers reliable warmth even in moist conditions, protected by a PFC-free water-repellent finish on the nylon ripstop shell. The interior features a soft polyester taffeta lining for enhanced comfort. Technical specifications include a total weight of 1.05kg (2lb 5oz) for the regular size, a compressed size of 20 x 23cm, and a temperature rating of 15°F ​/​ -9°C. Key features include the Pillow Barn to secure your pillow, a Free Range Hood for unrestricted movement, a no-draft collar, a no-draft wedge, and a two-way YKK #5 anti-snag locking zipper with a no-draft zipper bolster.