In addition to using all necessary production techniques in order to offer durability, health, and ergonomics together in our bags, we also make innovative arrangements to strengthen the products. At the bottom of our bags. - Waterproof Polyester + PVC Fabric - 7mm foam for an orthopedic use - 1 mm PE Board material filling - Special production Polyester + PVC lining - Designed with wonderful colors and patterns. - Four Compartment Backpack - The main compartment of the bag has a double zipper slider to be more stable and secure. - There is a 25mm material hand grip on the shoulder pads. - The shoulder straps are made of foam and soft materials that will absorb the weight and provide comfortable use. - The back part is produced by combining the fabric of the same color and material as the bag and the foam that will provide more comfort between the protective lining inside to create an orthopedic structure. - On the sides, there are 1 mesh accessory and a bottle pocket made of flexible material. - The bottom part of the bag is made of thick and soft foam to absorb impacts and a separate PVC layer to increase durability in order to provide durability and more aesthetic use. - On the side of your bag, there is a USB outlet that will make it easier for you to quickly charge your mobile device with a Power bank or similar power source that you carry in your bag while on the move or in an emergency. - There is a universal 3.5mm Aux output on the side of your bag, allowing you to easily and safely listen to music on the go. In this way, you will have the opportunity to listen to music from your music player or mobile device that you carry safely in your bag. - Generally suitable for use by primary and secondary school children. - Clean the product with a damp cloth. Do not wash in the washing machine or by hand with strong chemical cleaning agents. - It is made of polyester material. - This product has successfully passed all health tests - All Coral High products are produced with the assurance of Yaygan. - Depth: 14 cm. - Width: 27 cm. - Height: 38 cm. - Volume: 14.4 Liters - Weight: 600 Grams