Made of Water Resistant high-density polyester material. camping backpack is made of extra thick, tear-resistant, water-resistant and anti-abrasion polyester fiber. All stress points are reinforced with bar tacking to increase its longevity.breathable system and lightweight design are the perfect hiking backpack for outdoor sports. Ergonomically designed provides body comfort even when pack is completely full. Keep it cool even in summer.Large capacity helps you easily organize all your essential items.Breathable mesh shoulder straps with plentiful sponge padding help relieve the stress from your shoulder. A must have for sports , hiking, camping and traveling.