The Kenworth T680, T880, W990 Grey ZenEclipse Door Window Cover Set is a practical and efficient solution for insulating your truck's windows. This set includes covers for both the driver and passenger side windows, made with 7 quilted layers including an aluminum radiant heat barrier, 1/4 inch foam, and 3 layers of polyester. The covers are easy to install with suction cups and are designed to fit most Kenworth T680, T880, and W990 models. Made in the USA, these covers provide quick and effective insulation, keeping your truck comfortable in any weather condition.