Moonwind Waterproof School Backpack Book Bag and Pencil Case Set Teen Boys Girls Water repellent 900D polyester+150D polyester lining, sturdy and durable; The small size one suggest for students that 105-130 height, and the large size one suggest for students that 135 cm above height 3D mesh breathable straps design, effectively relieve shoulders pressure from the book bag; 3D mesh with 10mm pearl cotton auxiliary material ventilation back design, thickness sponge effectively relieve pressure and decompose backs loads from the book bag Large capacity wit multi-pocketed design with 1 main pocket for A4 A5 books, pencil case, color pen, daily use; 2 mesh side pockets for bottle or umbrella; 1 front pockets with sandwich compartment for pen, ruler or stationery; 1 smaller front pocket for tissue or small stationery; 1 laptop compartment with elastic band for 15 inch laptop (the large one) and 8 inch laptop (the small one) Three layers of back comfortable system: the first is breathable mesh system, the second is widening delivery system, the third is decompression seismic system Comet with a pencil case, personalized, practical, beautiful; Size: large--L29*W16*H44 cm (11.4*6.3*17.3 inch), small--L27*W11.5*H38 cm (10.6*4.5*15 inch), pencil case--L18.5*W4.5*H5.5 cm (7.3*1.8*2.2 inch)