1. Carbon Fiber material, not easy to corrode or break.Comfortable driving in winter. 2. Dual Temperature Control System.This system regulates the flow of power and maintains a precise temperature range whether on the high or low setting. 3. 3 Level Adjustable.Continuous temperature monitoring prevents overheating, safe and reliable. 4. Adhesive tape included, for holding in place while reinstalling the seat cover. 5. Universal fits most cars.or Front and Rear bucket and bench seats Apply to any cloth, leather, or vinyl covered. Rated voltage:12V-13.5V Round Switch:3 Levels Switch temperature settings with Harness Temperature variation range:30℃-45℃ Fitment:It is a universal model,so it fit all seats such as car, SUV, truck, RV, boat, universal fit on any 12V DC system on leather. Note: 1. Please verify your seat covers are removable before purchase. 2. Professional installation is highly recommended! 3. Please DO NOT use on seats where the covers are fused to the foam. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:As Shown Material:Plastic + Carbon fiber Package Contents: 4 x heating pads 1 x switch kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.