Design: Breathable, itch-free, ZQ Merino wool upper Easy on, easy off elastic laces Natural materials with a small carbon footprint (8.03 kg CO2e) ZQRx Regenerative Wool Material: The wool used for Allbirds's Regen Capsule is grown using regenerative farming practices that aim to help reverse climate change through practices that restore and preserve nature Additional Details: Machine Washable because kids love dirt and messes can happen alot Care Instructions: Remove insoles; place shoes in delicates bag (pillowcase works); Gentle cycle with cold water and mild detergent; Shake out excess water and air dry Fits true to size