The REI 30 Degree Campwell Sleeping Bag in size M is designed for outdoor activities such as hiking and camping. With a temperature rating of 30 °F, this sleeping bag provides warmth and comfort during colder nights. Made of polyester shell material, it is durable and suitable for various camping trips. Its medium size is ideal for average individuals, ensuring a comfortable sleep while enjoying the great outdoors. Whether you're camping in the mountains or at the beach, this sleeping bag is a reliable choice for a good night's rest.