The Maxi Cosi Pria LX convertible car seat is suitable for newborns to approximately 4 years of age and includes a world exclusive SMART Guide top tether guide, making this seat safer and easier to use every day. Pria LX is the most compact car seat on the market, ensuring a comfortable and easy 3-across fitment in most cars. You’ll love the easy installation with the SMART Lock system, ensuring a secure fitment every time. The patented Air Protect technology offers head protection whilst the premium fabrics, 3D mesh and air ventilation will keep your baby comfortable all year round.