Did your kids have the same backpack as 80% of their classmates last year? We bet mix-ups were common, then! Why not get them a great personalized backpack from Personalization Mall , so there will never be any doubt which knapsack is theirs? Right now, all back to school gear, from notebooks to posters to bags, is on sale for up to 25% off. Add in coupon code SUMMER15, and you'll save an additional 15%. Back to School sale ends 07/31/2011, coupon expires 08/14/2011.