Application It is compatible with car seats featuring metal bar spacing between 2.76 and 7.09 in. It is suitable for adults and children. Specifications Color: Black Material: ABS, Memory Foam, and Ice Silk Fabric Mounting Type: Car Seat Mounted Seasonal Use: All Seasons Product Size: 26*25.5cm/10.24*10.04in Each Pillow Size: 2.5*12.5*18cm/0.98*4.92*7.09in Package Size: 31*20.1*5cm/12.2*7.91*1.97in Gross Weight: 0.8kg/1.76 lbs Net Weight: 0.72kg/ 1.59 lbs Package Included 1* Car Headrest Pillow with Hook.