Synthetic sleeping bags are made from man-made fibres and are ideal for people with feather allergies. These sleeping bags are also easy to maintain and water resistant, meaning they are suitable for use in rainy conditions. Due to their light weight, synthetic sleeping bags are ideal for hikers and campers who travel with limited gear. In addition, some synthetic sleeping bags are designed to mimic the properties of down, such as lightness and flexibility. These sleeping bags are often more affordable than their down counterparts.