For outdoor adventures or stomping around the playground, these boots from Columbia are sure to get the job done. The OutDry waterproof cuff has a Velcro strap for a perfect fit, and a bungee cinch to seal out the cold. The removable liner offers 200g insulation, good for temperatures down to -25 degrees Fahrenheit! A fused design, the foot and outsole are impermeable, and the sole has grippy tread. Synthetic Upper Lining 65% Recycled Polyester, 35% Polypropylene Imported