The industries first powerful UV protectant specifically formulated for vinyl truck bed covers, Tonno Tonic beautifies, cleans and protects all in one easy step. Using the most effective UV screening formula, Tonno Tonic has been tested and approved by Extang as 100% safe for all vinyl tonneau materials. Its a must have for protecting your tonneau against harsh weather conditions. To use, spray onto a clean tonneau. Wipe surface with a clean towel until completely dry. Tonno Tonic will not harm painted surfaces. For tires, spray on, wait five minutes, and wipe until dry. Tonno Tonic will not harm wheels.