The Scarpa Delta GTX Activ is a full leather 3 season boot which boasts Scarpa\'s \'ActivFit\' technology for continual optimum comfort and performance. Scarpa\'s ActivFit provides instant, out-of-the-box comfort and performance. Built on their superb BD last, it makes sure that your foot stays continually supported and secure, aided by AutoFit foam inserts in the heel area. The GORE-TEX Performance Comfort Footwear lining is ultra-lightweight and extremely breathable, keeping outer moisture away from the foot and wicking inner vapours away from the skin. Underfoot, the Biometric sole uses dual density PU to maintain the highest performance and quality. The midsole is reinforced with an additional moulded thermo plastic shank (TPU), and the Vibram outsole finishes it off. Last: BD Sole: Vibram Biometric Upper: Calf Leather BD Last A recently designed last, allowing for exceptional foot-hold with enough volume for plenty of cushioning. Vibram Biometric The new Vibram Biometric sole unit is lightweight yet extremely sturdy, anatomically designed for increased comfort. Activ Fit Sock Liner Scarpa\'s developed moulded sock liner specifically for men, providing the best comfort and support. Heel Tension System Offers great stability and adaptability to the severe stress derived from steep routes. Ankle Padding A special \"MEMORY FOAM\" padding that further improves the ability of self-moulding of the rear part of the upper. Very light and breathable, it keeps its dynamic memory, so it recovers its original shape after every use. Autofit Collar Ensures the maximum adaptability and comfort of the upper, resisting the impact stress on the Achilles and malleous area.  Great performance and comfort on any terrain.  V-Flex Allows a wider and more natural movement of the foot. The upper, in synergy with the lacing, wraps the foot in an optimal way for maximum comfort and support. Speed Lacing Allows the optional adjustment of the internal volumes of the shoe and the perfect wrapping of the foot, in a simple and quick way.