A safe, portable, and comfy alternative to standard booster seats, RideSafer is ideal for long car trip and taxi/rideshare. Designed to provide protection and a proper fit for children, the innovative design provides safety for the head, knees, and organs, and reduces risk of choking by redirecting the shoulder belt. It can be secured in two ways: with a tether belt or a car's included seatbelt and shoulder strap, allowing it to fit most car seat designs. The size of each vest is tailored to the weight of the child using it - small is for 30-60 lbs.,large is 50-80 lbs., and extra large is 80-100 lbs. All RideSafer vests have been tested and approved for use under the FMVSS 213 guidelines.