Columbia Sportswear Boy's Bugaboo Pants Shell: 100% nylon Legacy Twill. Lining: 100% polyester Omni-Heat Thermal Reflective Microtex Light. Insulation: 100% polyester Microtemp 100g Imported Wind Proof Pant Omni-Heat Thermal Reflective Liner Omni-Tech Waterproof/Breathable Critically Seam Sealed OUTGROWN Grow System Insulated, 100g