condition: excellent make / manufacturer: REI model name / number: Piggyback Very nice REI Baby Backpack, clean and in EXCELLENT condition! The REI Piggyback child carrier is all about parent's and baby's comfort. Our deluxe child carrier offers a secure, smooth ride on- and off-trail with a comfortable suspension system. Adult and child suspension systems feature curved, padded shoulder straps and hipbelts, lined with brushed polyester for moisture-wicking comfort Pack features a padded back panel with breathable mesh lining for increased air circulation Child's padded back panel features a breathable mesh cover with soft brushed polyester lining on the seat, sides, head and lumbar pads Adult suspension system has a quick torso-adjust with embroidered letters for easy-to-remember slots when switching between tall and short parents Child's seat and harness have multiple adjustments to fit a variety of sizes and to accommodate child's growth Fold-out kick stand aids in loading and won't pinch if little fingers get in the way Zip-off daypack for parent or older sibling features an insulated baby bottle pocket along with pockets for toys, snacks and extra clothes A rearview mirror is tethered to shoulder strap letting Mom or Dad see baby without removing the pack Generous reflective trim for visibility in low light and night time Carrier features a hydration sleeve holding up to a 70 oz. reservoir (sold separately) to keep adults hydrated when on the go Material is removable for easy cleaning REI Rain Bonnet (sold separately) attaches atop carrier to shield child from rain, sun and wind Age and weight requirements for your child: Your child must be capable of holding their head upright and sitting up by themselves. Usually a child older than 6 months is able to do this. It is a good idea to ask your pediatrician if they think your child is ready to ride in a child carrier. Do not carry any child who is over 45 lbs. or who is too large for the child harness system. Maximum total load capacity for child and gear is 60 lbs. Cash, Venmo, Paypal, Cash App