Travel Backpack Hiking Daypack, 30L/20L Lightweight Waterproof Climbing Backpack VERSATILE - Wearing: shoulder, diagonal, backpack.The wearing way is based on your outdoor demand. When camping,biking, hiking,going to school and so on,you can use it as backpack. Besides, the shoulder and diagonal form is a suitable choice for walking a dog, shopping, taking a walk and others. The bag can satisfy you different needs! SPACE - Full stretched size: High 15.74inches, length: 11inches, thickness: 5.1inches. It can hold your clothing, books, ipad, water bottles, umbrellas and so on. Compact Size: 7inches, height: 5.1inches, thickness: 1.18inches. It is small and lightweight to meet your travel days or school dailylife. HIGH QUALITY MATERIAL - High-quality nylon, tear-resistant, waterproof. Which can effectively prevent your belongings from the dust, rain and dirt. Durable buckle and strength zipper make it even more durable and longlasting. FASHION DESIGN, MULTI-COLOR OPTIONS - Streamlined appearance design makes it more fashion and beauty; and the design of music headphone jack will bring more enjoying to your trip. A variety of color options provides you more choice of color. SALE PROTECTION - The backpack has strict quality inspection. If there is any quality problem when you get it, we will give you a new instead of. Within 90 days after purchasing, if it does not meet your expectations, we will offer full refund. If you have a better suggestion or any problems on our customer service , please contact us. We will be happy to help you solve the problem.