•【Spacious and Expandable Capacity】Designed for versatility, this roll-top backpack offers an adjustable 36-55L capacity, making it perfect for travel, hiking, commuting, or outdoor adventures. The roll-top closure provides secure storage while accommodating larger loads when needed •【Water-Resistant and Durable Material】Crafted from premium nylon fabric with a water-resistant finish, this backpack protects your belongings from light rain and spills •【Ergonomic 3D Airflow Back Panel】Equipped with a 3D air pearl cotton back panel, the bag promotes free airflow to keep your back dry and comfortable. This design also reduces pressure on your shoulders and back, providing long-lasting comfort during extended use •【Adjustable Drawstring Side Pockets】The side pockets feature convenient drawstring closures, perfect for securing water bottles, umbrellas, or other essentials •【Stylish and Functional Design】Combining functionality with a sleek design, this backpack suits both men and women. Its lightweight yet sturdy build makes it an excellent choice for daily use, travel, or outdoor activities Specifications: •Product size: 44*15*29 •Product material: water-repellent nylon Package included: •1 x Roll Top Backpack •Other items not include