Their first, or tenth, hike will feel comfortable as they trample the trails in the Hydro hiker from Merrell Kids! ; Lightweight synthetic upper. ; Vented upper for breathability. ; Hook-and-loop closure for easy on and off. ; Heel pull-loop for easy entry. ; High collar for all-day support. ; Quick-dry, hydrophobic lining is treated with M-Select FRESH odor control. ; EVA integrated footbed for added comfort. ; M-Select GRIP tunes each outsole with durable traction that responds to wet and sloppy conditions. ; Imported. Measurements: ; Weight: 10 oz ; Product measurements were taken using size 4 Big Kid, width M. Please note that measurements may vary by size.