Come and Check Our Promo Solutions.This laptop backpack is made of durable oxford cloth ,built-in USB PORT is convenient to charge your cell phone by the connected power bank . Comfortable airflow back design with thick but soft multi-panel ventilated padding, gives you maximum back support, breathable and adjustable shoulder straps relieve the stress of shoulder. Perfects for business traveling, weekend getaways, school,camping,shopping & outdoor activities in daily life. Pls check inventory and detailed info with us before placing your orders.