The Teton Celsius Regular sleeping bag is designed for camping and hiking in colder temperatures, with a temperature rating of -25F to 0F degrees Celsius. This rectangular-shaped sleeping bag includes a stuff sack for easy transportation and has a polyester fill material for warmth. The outer material is made of durable polyester flannel, and it features innovative fiber fill, double-layer construction, and lightweight design for added comfort and functionality. With a limited lifetime warranty and a high customer review rating, this sleeping bag is a reliable choice for outdoor adventures in the fall season.