KID COMFORT: Bring your most precious cargo along for all your outdoor adventures with the Kid Comfort. Perfectly engineered to fit the needs of both children and parents. MAX VENTILATION, MAX ENDURANCE: The Aircomfort mesh back system provides maximum ventilation. A durable frame construction designed from flexible and break-proof spring steel provides provides even distribution of load and creates a ventilation space between wearer and pack. ADJUSTABLE: The Vari Slide back length adjustment system allows for personalized comfort and the best fit. INCLUDES: Sun roof, pull-forward hip fins, padded hip belt, load adjustment straps, and adjustable sternum belt to ensure that the load is distributed evenly and the backpack stays secure. Does not include a chin pad. DURABILITY: Crafted from 210 denier polyamide fabric with strong ripstop threads and PU coating, a fine, lightweight and yet abrasion resistant nylon that is optimal for lightweight backpack construction.We have two of these and use them for a couple years. Our kids are grown out of them and have no more use for them.