This 20L foldable backpack is a must - have for both men and women who love outdoor activities. The water - resistant fabric ensures that your items stay dry even in unexpected light rain. The breathable mesh shoulder straps provide comfort during long - distance hikes or travels. The side pocket design allows you to quickly grab your phone, keys, or other small essentials. The high - quality hardware zippers guarantee smooth opening and closing. With adjustable buckles, you can easily adjust the backpack to fit your body perfectly. It weighs only 60G and can be conveniently folded. When unfolded, it measures 30cm/14cm/41cm, and when folded, it's just 7cm/2cm/12cm. The backpack comes in a classic black color and is packaged with a drawstring storage bag. Whether you're going on a mountain hike, a long - distance walk, or a morning run, this backpack is your reliable companion.