The production of the back body of the bags we produce as coral high, which has a laptop compartment or has a usb socket, consists of 4 separate layers... - waterproof polyester + pvc fabric - 7 mm foam for an orthopedic use - special production polyester + pvc lining - special production polyester + pvc lining laptop compartment ultra reinforced shoulders and handle in our bags, an ultra-strong sewing technique is used, which is formed by folding the handles and combining 7 layers in order to increase the strength of the handles and shoulder straps placed on the back body. the shoulder straps of our bags consist of 3 separate layers... - waterproof polyester + pvc fabric - 7mm foam that provides an orthopedic use - mesh material that is breathable and provides a more comfortable use by increasing softness. there is a socket with 5mm aux output. thanks to this socket, you can charge your mobile device or usb-chargeable electronic devices with an energy source (powerbank) that you placed in your bag (in the compartment supported by a protective pocket) while on the move. at the same time, if you have a music player or mobile device in your bag, you can use it with a headphone that you can plug into the socket from outside and listen to music thanks to this socket. note: inside the socket, there are cables and inputs ready to extend the connection and connect your devices. 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 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 double zipper slider to be more stable and secure. - there is a 25 mm material hand grip on the shoulder pads. - the shoulder straps are made of foam and soft materials that will absorb the weight and provide a 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 foam that will absorb impacts and a separate pvc layer to increase durability in order to provide durability and a 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 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. - this product is under warranty for 1 year against material and manufacturing defects. - 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 passed all health tests successfully - all coral high products are produced with yaygan assurance. - product depth: 14 cm. - product width: 27 cm. - product height: 38 cm. - product volume: 14.4 liters - product weight: 600 grams Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.