The Kinesis Pro GTX is a classic backpacking boot designed with all the modern technology to keep you comfortable, dry and supported on every kind of hike. Durable nubuck upper. GORE-TEX Performance Comfort lining gives you full waterproof protection. Full rubber rand offers important protection against abrasions. Active Pro 4mm footbed for cushioned support. Dual-density PU midsole for long-lasting support and comfort. Vibram Biometric outsole for maximum durability. Measurements: Weight: 2 lbs 5 oz Circumference: 14 in Shaft: 8 1 2 in Product measurements were taken using size 46 (US Mens 12), width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.