Combining a curved, asymmetrical last with a slightly softer construction and thinner sole for enhanced flexibility and sensitivity, the Instinct VS is the cornerstone of Scarpa's Performance line—an all-around shoe that handles a variety of styles at the highest level. Bi-Tension™ active rand provides maximum toe power Strategically placed Vibram® XS Edge in the forefoot and XS Grip 2 in the heel Floating power strap enhances fit and provides power Rubber toe patch provides maximum toe hooking power Perfect for bouldering, sport climbing, and technical face climbing Features BI-TENSION SYSTEM Bi-Tension system is a tensioned rubber wrap reaching down two sides of the shoe. It gives priority to sensitivity and subtle support. Specially adapted to our slightly asymmetrical models, Bi-Tension runs under the front of the toes and draws down along the sides of the foot, leaving the center pad for sensitivity. RUBBER TOE PATCH Rubber toe patch provides maximum toe hooking power. Tech Specs Size Options : 34 - 45 (half sizes); 46-50 (whole sizes) Weight Reference : 230g; 8.1oz (1/2 pair size 40) Upper : Microsuede + Leather Midsole : Flexan 1.0mm Outsole : Forefoot: Vibram® XS Edge (3.5mm); Heel: Vibram® XS Grip2 (2mm) Last : FV – Moderately Downturned, Moderately Asymmetric Profile : Moderately Downturned Symmetry : Moderately Asymmetric Primary Material : Synthetic Sole Rubber : Vibram® XS Edge, Vibram® XS Grip2 Country of Origin : Italy Product Code : 70013000 Shoe Construction Upper: Multi-panel (7) upper construction in Microsuede for unmatched fit and performance Midsole: Flexan 1.0 midsole for precise support Tensioning: Bi-Tension Active Rand rubber wrap reaching down two sides of the shoe Outsole: Vibram XS Grip 2 makes these shoes stick like glue Sizing All SCARPA non-plastic footwear and the Alien 3.0 uses European sizing. 1 Euro whole size = 6.6 mm = 0.26 inches 1 US whole size = 8.4 mm = 0.33 inches The 30 Euro sizes below cover the same size range as 24 US sizes Euro sizes provide a better, more precise fit for your intended use For mountaineering boots, upsize (1/2+ sizes) depending on desired fit.