KEEPS YOUR CHILD'S SEAT COOL DURING HOT DAYS: Our shade cover shields out and screens or shields the sun so the seat will stay at a cooler temp...thus making your loved one more comfortable during your drive. On average the carseat will be 26 degrees cooler than without the sun blocker. COMPATIBLE WITH MOST CAR SEATS: The elastic material allows it to expand and contract so it can cover and fit on most baby seats. EASY TO INSTALL: Just pull the edges of the the shade blocker over the corners of the seat and the elasticity will contract so it secures a tight fit. EASY TO STORE: Roll or fold up the sun shade cover so it can fit in small areas.