Upper Material: Idro-Perwanger Roughout leather (3mm), PU, steel toe insert Waterproofing: GORE-TEX Insulation: Ibi-Thermo 6mm Lining: GORE-TEX Performance Comfort Closure: lace With classic Mountain boot roots and upgraded technology, the Nepal S3 Work GTX boot meets the demanding needs of arborists, linesmen and other workers who require a solidly constructed boot with a stable platform and a sole that is of durable construction. The Nepal S3 Work GTX boot meets stringent requirements and is certified in Europe.