Sell Multifunctional Backpack Rain Cover Backpack Waterproof Cover School Bag best price

Capacity conversion reference: Rainproof covers measure your backpack according to the size of the bag: (long, wide, high) about cm and then calculate the capacity of the student bag is normally 35L. Many want to buy a bag rainproof, but don't know how big the following i explain to you: First measure schoolbag (long width high) and then remove 1000 attention unit is cm 74cm x 35cm x 25cm wide, 74x35 x 25 divided by 1000 equal to 65.6 l, you can choose 70L. Can buy bigger than smaller Size reference approximate data: 60l: 60x40 x 25cm 35l: 45x30 x 20cm 70L: 70x40 x 25cm 45l: 50x35 x 25cm 80L: 80x40 x 25cm (if You don't know, talk to the customer service for advice)