Connect3 R Backless Booster, sold as a Pack of Two is the first and only booster with a unique, multi-patented design that enables it to fit 3-across in a variety of combinations with other Connect3 boosters, Radian convertible car seats, and adult passengers in most mid-sized ...Connect3 R Backless Booster, sold as a Pack of Two is the first and only booster with a unique, multi-patented design that enables it to fit 3-across in a variety of combinations with other Connect3 boosters, Radian convertible car seats, and adult passengers in most mid-sized sedans and up. The Connect3 RXT 2-in-1 High-Back Booster was submitted to JPMA for the 2024 Innovation Awards. All Connect3 models share the patented 3-across features that won the award in the Child Restraint Systems category.