Timberland Men's Port Union Waterproof Insulated Boots A2BSG210 Style A2BSG210 Packed with comfort features including our own SensorFlex technology, this Port Union waterproof style features clean silhouettes, warm insulation, and eco-conscious materials. Better Leather from a tannery rated silver for its water, energy, and waste management practices 200 grams of PrimaLoft insulation 100% cotton laces Lightweight OrthoLite footbed TimberDry waterproof membrane made of 50% recycled plastic bottles SensorFlex comfort system Imported