REMA repair units vulcanize without heat. Just clean injured area with pre-buff, then apply cold vulcanizing cement and apply the unit. Bias sidewall repair units are specifically designed for injuries in tire sidewall. Use REMA Special BL Super Cement when applying unit. To make the job even easier, we have a free REMA repair manual which covers step-by-step illustrations. Made in Germany. NOTE: Store patches at room temperature away from sunlight.