Improved load-bearing equipment. Manually operated, lightweight purge valve with 1000lb crush rating makes compression simple and effective. Proprietary and incredibly durable lightweight fabrics and coatings (210D High-Tenacity polyurethane coated Oxford Nylon. Dry Seal dual-strip roll-down closure. Weight: 351 grams/12.4oz Dimensions: 33x76 cm/13x30 inches Volume: 65 liters/3966 cubic inches