The Calyx™

Introducing the Calyx™, Purple Mountain Observatory’s debut footwear silhouette, designed and developed in collaboration with Vibram. A modern interpretation of the classic camp shoe, the Calyx™ is built for those moments between effort and recovery. Engineered through Vibram’s advanced StratX formula, the Calyx’s seamless waterproof upper is sculpted from a single sheet of special rubber, eliminating the need for traditional stitching or layering.

The Vibram Grivola outsole delivers lightweight grip with its Vibram Megagrip compound, durability, and all-weather traction, making it equally suited to the trail, forest, dry or wet and anything in between.