18L LARGE CAPACITY MULTI-COMPARTMENT STYLISH DESIGN: Seven pockets to meet your daily needs. The spacious main pocket can accommodate up to a 13-inch computer. Versatile features perfect carry-on bag for weekend traveling, hiking, cycling, amusement parks, outdoor recreation activities INNOVATION UMBRELLA POUCH & WATER BOTTLE HOLDER: A zippered mesh net storage at the bottom for wet umbrella or wet towel. The side water bottle holder provides stable brace during outdoor sports. For the convenience, it features the hidden back pocket and shoulder strap pocket(Suitable for credit cards, money bills and phones smaller than 5.8 inches in size) CHANGEABLE & ADJUSTABLE SHOULDER STRAP: It can flexible switch around right or left-handed , the adjustable strap range is around 25.9 - 46.5 inches / 66-118cm. Can be worn as a sling bag, chest bag, shoulder bag, crossbody bag BREATHABLE & SOFT COMFORT PADDING: Protective padding on the back and bottom of the main pocket provides cushioning. The unique shape is more conducive to perspiration and is suitable for long-term carrying. There is also a convenient headphone hole on the front of the bag, so you can easily enjoy music HIGH QUALITY WATER REPELLENT & ANTI-FRICTION: This sling bag is made of special linen materials which is water resistant, easy to clean and anti-frictional, effectively prevent it from tearing, wetting and ripping