• polyester fiber
• Multifunctional: can be applied for hiking and camping, or just for home sleeping use when there is guests,camping ,mummy sleeping bags for adults
• Mummy sleeping bags cold weather--drawstring hood covers your entire head and face to keep warm, can can be freely adjusted,camping
• Mummy sleeping bags for adults--internal pouch for holding valuables and mobile phones,camping
• Mummy sleeping bags--comfortable, waterproof, durable and lightweight to use,camping