This isn't your standard bug out bag. The Teton Sports Explorer 4000 Bug Out Bag continues to be a top selling internal frame backpack on Amazon at a great price for all the included features. The backpack is for both men and women.Just right for youth and adults for backpacking. Has 4,000 cubic inch (65 L) capacity. Best for 2-5 day trips. Weighs 5 pounds (2.3 kg).Multi-position torso adjustment fits wide range of body sizes. Durable open-cell foam lumbar pad and molded channels provide maximum comfort and airflow.