The Revolve360 Extend is the only car seat you’ll ever need, growing with your child with 3 modes that adapt to every stage: rear-facing (4 to 50 lb), forward-facing (30 to 65 lb) and booster (40 to 120 lb). You’re looking for a safe car seat — and the smart car seat choice is a connected car seat. The Evenflo Gold Revolve360 Extend will help put your mind at ease when it comes to child car seat safety, featuring SensorSafe™ to connect you to your little one from the backseat. While your eyes are focused on the road, integrated SensorSafe technology alerts you in real-time to four potentially unsafe conditions from your child’s car seat via your phone: unexpected chest clip unbuckling, temperature too hot or too cold in the car, child unattended in the car, and child seated too long.