Columbia Outgrown System Snow Ski Bib Insulated Waterproof Omni Tech Snow Board Children’s Adjustable Great condition, no flaws. size XS/6 The waterproof-breathable fabric keeps wet out, while synthetic insulation and our thermal-reflective lining keep warmth in. Our unique Outgrown™ system helps accommodate growth spurts so they can get multiple seasons out of these pants. Omni-Tech™ waterproof/breathable material.