It is not only a common backpack, also an UV disinfection backpack. Keep your personal items clean while you are outside. Exclusive designed powerful UV technology, the LED ultraviolet can kill many kinds of bacteria, kill up to 99%. Negative ion deodorization, constant temperature sterilization, lightweight and convenient. Size: 15.1″ x 7.5″ x 3.9″. Please contact us if you want to print logos.