NWT Size 37/ 6.5 Stretch knee-high boots available in black and green. Round toe. Inner zipper for slipping on with ease. Chunky track sole. Available in several widths.STARFIT®. Flexible technical insole made of polyurethane composite foam, designed to offer greater comfort.Sole height 6 cm. AIRFIT® TECHNICAL INSOLE FOAM Technical insole made of SBR. Comfort, durability, breathability, antibacterial design, cushioning factor. 444 BREATHABLE It includes breathable membranes so that moisture does not accumulate. ANTIBACTERIAL It includes a treatment that reduces the growth of bacteria.