What Our Gearhead(R) Experts Are Saying:"The Ribelle HD is one of the most comfortable mountaineering boots I've worn. It's surprisingly lightweight, and the rocker profile makes long approaches feel easier. The HDry(R) membrane keeps my feet dry in wet conditions, and the Perwanger suede upper is super durable. Plus, with semi-automatic crampon compatibility, it's ready for technical terrain without the bulk of a plastic boot."When the mountains call, we answer with the Scarpa Ribelle HD Mountaineering Boot. Designed for fast-moving alpine missions, this boot merges the durability of a mountaineering boot with the agility of running footwear. The HDry(R) waterproof membrane and 37. 5(R) lining manage moisture to keep our feet dry, whether we're breaking trail through slush or tackling icy ridgelines. Built with a Perwanger suede leather upper, the Ribelle HD withstands the rigors of rugged terrain while maintaining flexibility for efficient movement. The Vibram(R) Precision Tech Roll outsole, with its rocker profile, reduces fatigue on long approaches, while the Sock-Fit(TM) XT construction wraps our foot securely for a precise and comfortable fit. Semi-automatic crampon compatibility adds versatility, making this a go-to boot for technical ascents and demanding mountain adventures.