Fit and Design: Regular fit for easy layering and mobility Room-To-Grow(TM) system can extend the inseam length two inches for growth spurts External waistband adjustment Water-resistant boot gaiter Reinforced seat and knees Articulated knees Anti-scuff cuffs Hook-and-loop cuff elevators Mesh-lined no-snag thigh vents Zippered microfleece handwarmer pockets Zippered thigh pocket Nylon taffeta lining YKK(R) zippers Technology: 60g ThermacoreEco insulation for warmth without adding bulk Durable 2-layer shell with taped seams to seal out the elements Waterproof-breathable material Additional Details: Bluesign(R) approved product uses responsibly produced materials and PFC-free DWR for a reduced impact on humans and the planet during manufacturing