Large capacity to meet the needs of outdoor mountaineering: outdoor sports often need to carry a lot of equipment, such as clothing, water bottles, food, tents, etc. Large capacity outdoor backpack can easily accommodate these items, so you have no worries.Wide shoulder strap design: Disperse shoulder pressure, long time carrying is not easy to fatigue. Breathable back pad: reduce back heat, keep dry and comfortable.Multi-layer design: Categorize small items such as mobile phones, wallets, keys for easy access. Lightweight material: The use of lightweight material, reduce the burden on the shoulder, so that you can easily travel.Safety details to ensure travel: Reflective strip: increased visibility at night. SOS whistle: For emergency use. First aid kit strap: easy to carry first aid kit.Wear-resistant and waterproof material to cope with harsh environments: high-strength nylon: wear-resistant and tear resistant, durable. Waterproof coating: resist rain and snow to protect the interior.