Therm-a-Rest Vesper 45F / 7C Quilt is a high performance, lightweight and super warm quilted sleeping bag that allows you to sleep well even in cold and wet conditions! Compared to the classic sleeping bags, the back area is not present because it is replaced directly by the mattress that connects directly to the quilt through the very comfortable SynergyLink connectors, which hold it in position and prevent it from moving. This allows you to save a lot of weight and a lot of space: it weighs less than 340 g in the Regular variant and once closed it has a footprint of only 11x15 cm! The exterior is made of 10D RipStop Nylon with a DWR treatment that makes it water repellent. The padding, on the other hand, is in 900 Fill Goose Nikwax Hydrophobic Down RDS down, which in addition to having exceptional thermal performance is also ultra-light and remains dry 60 times longer than untreated down in conditions of high humidity. Dimensions: - Regular, 190 cm x 147 cm, 340 g- Long, 200cm x 154cm, 390g Therm-a-Rest Vesper 45F / 7C Quilt sleeping bag