The Kenworth T400, T450, T600, T800, W900 Grey ZenEclipse Door Window Cover Set With Peeper Window Cover is a practical and efficient solution for protecting your truck's interior. This set includes driver and passenger window covers, as well as a peeper window cover, all made with 7 quilted layers, aluminum radiant heat barrier, 1/4 inch foam, and 3 layers of polyester. The suction cup design allows for easy installation in seconds, and it fits most Kenworth T400, T450, T600, T800, W900 models. Made in the USA, this window cover set is a durable and effective choice for any truck owner.