My version is the Next Fit Zip Max Air. The air version uses a slightly different material for the backrest to allow better air circulation so our little ones doesnt get too sweaty. It tends to get pretty hot at the back of the car especially during rear facing as the air cond doesnt reach them directly. For me this is the perfect car seat for us as it fits and snug accordingly in both of our cars. The installation is very easy, for us we use seat belt to secure. Buka seat cover guna zipper tu, then cuma kena lalukan seat belt kat bawah seat cover tu untuk sambung ke buckle. Dah siap. Takde seat belt yg bersilang2 dah kat tepi so anak nak keluar masuk crs pun senang. For me this car seat is worth every penny because of the safety features and the well built quality. Padding pun tebal, and reclination ada 9 level. Guidance yg disediakan pun mudah untuk difahami. This car seat boleh guna both seat belt or ISOFIX to secure it to the car. I have 2 cars, 1 is proton saga which does not have ISOFIX so I\'ll use the seat belt to secure. Another car is Myvi SE which has ISOFIX, so I\'ll attached this CRS to the seat using the ISOFIX clip sebab lagi cepat. And when not in use, the ISOFIX clip can be stored into a compartment provided on the side of the car seats. Bonus, untuk version MAX, boleh rear facing sampai 22kg which is by far the highest in the market. It is highly recommended to rear face your child for as long as they can as it is the safest position during collision. Impact kepada kanak-kanak jika rear facing berkurang banyak. I highly recommend this model as it is truly made with the greatest consideration on the safety and comfortability of the child and the convenience of the parents. However, I would also recommend you to engage with the shop/Chicco sales assistance to test out this car seat first whether it suits your car or not before purchasing. Because sometimes not all car seat suits every car (we learnt the lesson with our Crolla S Spin car seat). Your child safety is the most important.