It is always a good idea to have a back-up and we have them ready for you. You can purchase extra drivers and panels and put them on anything you wish to light up and bring attention to projects. BACK E SHIRT DRIVER Extra drivers for your E SHIRTS Regular price: $18.50 SALE PRICE: $16.50 Xenoline is a Trademark of Otherland Group Inc. All rights reserved! Up-dated January 2008