Combining a super sticky Vibram® Idro-Grip sole for incredible traction with a stout leather upper, the Boulder X from La Sportiva is a versatile approach shoe that's well equipped for scrambling, hiking and mountain treks where tricky footwork is required.Features Lightweight approach shoe from La Sportiva Stout leather uppers on the outside - for durability and abrasion resistance. Sticky Vibram® Idro-Grip outsole - for maximum climbing performance. Sticky rubber toe rand - for rugged protection. Last: Boulder Construction: Board Lasted Upper: Leather Midsole: Micropore EVA Insole: 2mm Polyproylene Sole: Vibram® Idro-Grip V-Smear Impact Brake System Weight: 508 g Recommended activity - technical approach / hiking / scrambling / climbing