Waterproof and durable polyester fabric with metal zippers. Ultra-weight and sturdy, ensure a secure & long-lasting use daily. Perfect for weekend getaways, shopping, office work, business traveling and other outdoor activities. Adjustable shoulder straps and breathable sponge mesh design, reduces stress. Foam-padded top handle for a long time carry on. A comfortable airflow foam-pad back design with soft, multi-panel breathable mesh padding with good heat dissipation and not get clammy, offering your back maximum back support. A foam-padded top handle makes it a carry-on Also, it is a perfect student’s backpack for women, men, teens, boys and girls.can be attached to the suitcase, over the luggage upright handle tube for easier carrying.