Evecase Hiking Backpack Water Resistant Outdoor Climbing Camping Mountaineering Outdoor Sports Travel Daypack - Blue 40L Evecase Large Outdoor Hiking Climbing Camping Mountaineering Sport Travel Backpack - 40L Nicely padded shoulder strap for added comfort during your outdoor activities or simple commute Lightweight and Water Resistant nylon fabric, perfect for outdoor adventure Breathable and comfortable mesh pad design for support and air flow circulation Extra-large capacity for putting or hanging sleeping bags, tents, and Trekking Pole all together with ease.