【Leak-proof and Insulated Lunch Box】- Built with Eco-friendly waterproof polyester lining, which is soft,leak-proof and easy to clean. Padded With 4mm EPE foam will keep your food cold or warm when you're taking on the daily grind. 【Durable Material Lunch Bag】- This Reusable lunch bag is made of high quality leak-proof resistant oxford fabric. Heavy duty metal zippers and enhanced by bar-tacks at major stress points provide long-lasting durability against daily. 【Convenient and Portable】- The lunch bag comes with a detachable and adjustable shoulder strap which makes it easy to carry by hand or greatly tied to your backpack or along side a briefcase. It is convenient to be used as your lunch bag, cooler bag, picnic bag, sundry bag or shopping bag. 【Larger Capacity & Multi-Compartments】- This Cooler Tote Bag features one main zipped compartment to keep you food and drinks warm or fresh. One front pocket and back pocket for keys,cards. Two mesh pockets for water bottles and one internal mesh pocket for knives,forks and spoons. Dimensions are 10" х 6.7" х 8"inch (L x W x H) , great for packing all of your food and snacks for the whole day. Research & Development We have several options for developing new designs: 1) Customers provide their artworks and samples for making samples 2) Customers give us only their ideas, and we design and develop them. 3) We design and develop our new products according to our marketing experience for our customers' choice 4) Every season we develop new fabric and new colors for our customers. Sending us your product ideas today to contact us for more information on our abilities. Quality & QC procedure After the order is confirmed, we have a meeting with all the departments before production, investigate all the workmanship and technical details, make sure all the details are under control. 1)100% inspection for the cutting, main trim, production(making a pre-production sample before production)and the finished product. 2)Morning meetings by the factory director each day; 3)Q/A for the during and finished production; 4)Q/A for packing inspection; 5)Final inspection while packing up all the messenger bags. If there is no other problem at this stage, our QC will issue the inspection report and release for shipping 6) We strictly follow ISO AQL standards