The Osprey Ace 38 is a 38-liter kids' hiking pack built for day hikes and multi-day treks as a child grows. The AirSpeed tensioned-mesh back panel holds the pack slightly off the back for better airflow, which matters most on warm-weather trails, while the internal LightWire frame transfers some load to a padded hipbelt with pockets.
Torso length adjusts between 28 and 38 cm, so the pack can grow with the child across several seasons rather than needing replacement each year. At 1320 g for 38 L, that works out to roughly 34.7 g per liter — a reasonable figure for a framed kids' pack with an integrated rain cover. The fabric — 600D recycled nylon with bluesign approval and PFC-free DWR — also covers the environmental side of the build.
It suits families planning hikes with kids across a wide age range, given the generous torso adjustment. Osprey backs the pack with a 99-year warranty, signaling that it's built to last through multiple kids or seasons.