Hi Amanda, Thank you for your enquiry. The Britax B Safe 35 Capsule has an expiry date of 6yrs from purchase. Installation can be through use of the seat belt or the SafeCenter LATCH system which provides simple, convenient car seat installation through the easy center-pull straps that clinch down quickly. This capsule is rear facing and can be installed with or without the base, however before selecting a child restraint, it is important to take into account the child’s weight, height and age, any physical, developmental and behavioural considerations, the type of restraint and vehicle. Therefore, we would recommend that you contact your nearest Baby On The Move Store where one of our expert Car Restraint Technicians can help you to find the correct capsule for you and your baby and assist with installing it correctly into your vehicle. To find your nearest store and speak with one of our experts direct, follow the link https://www.babyonthemove.co.nz/store-locations/. We hope this has helped with your query.