REI Sprig 12 Kids Backpack -FreeFlow sculpted back panel reduces sweaty contact areas with peaks and valleys that let vapor escape; soft foam allows the pack to conform to kids' backs -Webbing hipbelt can be tucked away into its own pocket when not in use -Panel loading main compartment is easy to organize and access; hydration pocket fits a 50 fl. oz. hydration reservoir (sold separately) -Elastic cord on the front provides a spot to stash a jacket and helps compress the pack body; mesh side pockets hold water bottles and afternoon snacks -Safety whistle is built into the sternum strap buckle so a child need never be without this 10 essentials item -The REI Sprig 12 pack is designed to keep the load close to the body for stability Kids' Weight: 12 ounces; 340.2 grams Best Use: Hiking Dimensions 13 x 7 x 6.25 inches Fits Torso: 5 to 8 years Frameless Material: Nylon Pack Access Gear Capacity (L): 12 liter Gear Capacity (cu. in.): 732 cubic inches Suspended Mesh Back Panel Exterior Pockets: 2 + main compartment