AKU Air 8000 hiking boots with GORE-TEX waterproof specifications. - Brand: AKU - Model: Air 8000 - Waterproof material: GORE-TEX - Sole material: Vibram - Color: Dark Brown Thank you for viewing. These were found at my parents' house. The purchase date is unknown. Although they are new and unused, please purchase only if you understand that they have been stored at home. No claims, no returns.