When you are on a relaxing vacation, the last thing you want is to be woken up by harsh sunlight in the early hours of the morning. Block out harmful UV rays and regulate temperature with the Dumble RV Supplies Medium Camper Door Shade. You can use this camper door window shade on your RV entry door, travel trailer window, or camper skylight to block out light and keep the interior of your RV cool in the summer or warm in the winter. The RV reflective window cover will not slip down your window or fall off during a long road trip because the adhesive-backed attachment tabs keep the RV door cover safely and securely adhered to your window. Includes (1) 50 x 30-inch medium size camper window shade that is collapsible. Measure your window to ensure correct fitment. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.