PerfectFIT™ Suspension System easily adjusts to fit any adult wearer so you can comfortably share the load; sternum strap helps distribute the weight Wide seat base and adjustable foot stirrups fit your kid's natural resting posture; load-lifter straps help shift the weight so you're comfortable 5-point safety harness and padded aluminum roll cage give you confidence on variable terrain Multiple grab handles make it easy to lift, shift and set down the child carrier Large zippered backpack space Stretch pocket on cushioned belt Smoke-free home. Like new condition.