go to motorcycle-superstore.com. they have waterproof covers for tank bags for less than $10



http://www.motorcycle-superstore.com/1/4/71/215/1/0/0/DCLASS/Street-Bike-Tank-Bags-Luggage-Accessories.aspx#&&Back=0-0-0%2c495-215-0-0-0-24-3-1-1 cheap bags. you should send the bag you got back, get your momney back and buy a different set, save your money man.