The Big Agnes Sidewinder SL 35 Sleeping Bag is a high-quality outdoor sleeping gear designed for camping and hiking adventures. With a temperature rating of 35°F, it is insulated with Synthetic 650 DownTek to keep you warm and cozy. The sleeping bag features a polyester fill, nylon shell, and is treated with insect repellent to ensure a comfortable and insect-free nights' sleep. It is available in a regular size, making it suitable for most people. Perfect for outdoor enthusiasts looking for a durable and effective sleeping solution.