For children who can sit upright on their own and who weigh between 22 and 44 pounds, CARES is a safety harness that straps around an airplane seat and provides child-sized restraints that attach to the lap belt.
A portable alternative to bringing a car seat onto a plane, the restraint weighs less than a pound and fits in a 6-inch sack. CARES has been certified for use in the U.S. (by the FAA), the UK, Australia, New Zealand and Singapore.
It costs $74.95 plus $5.95 shipping from Kids Fly Safe (800/299-6249, www.kidsflysafe.com).