Product Highlights: ✔ Large capacity 50L: specially designed for long-distance hiking and camping, easy to store tents, sleeping bags, clothing and other equipment to meet outdoor needs for 3-5 days. ✔ Ergonomic carrying system: thickened breathable shoulder strap + adjustable chest strap/belt to disperse shoulder pressure; honeycomb breathable groove design on the back, no stuffy sweat for a long time. ✔ Military grade wear-resistant fabric: 600D Oxford cloth + waterproof coating, water-resistant and tear-resistant, to deal with complex weather and terrain. ✔ Scientific section storage: main warehouse + top bag + side bag + bottom sleeping bag warehouse, items are classified and stored; External webbing can be fixed trekking poles, ice axes, side net pocket to take the kettle. ✔ Details intimate upgrade: Reflective strip design makes it safer to walk at night. Hidden rain cover warehouse, rapid protection in sudden rainy days; Unisex model, adjustable back length, suitable for different heights. Applicable scenarios: Heavy Hiking | Wilderness Camping | Long Trips | Professional Mountaineering Pattern: Plaid Lining texture: Polyester Scenario: Outdoor sports Color: black, red, light blue, navy blue Product Category: Hiking Bag Applicable gender: neutral/both male and female Function: wear resistance, expansion Material: Nylon Carry system: Air cushion strap Style: Leisure Travel Capacity: 50 liters (with rain cover)