Description A supremely comfortable and supportive trekking boot that is wearable straight from the box and will provide miles of reliable service. Using some clever technologies to enhance wearer comfort and minimise fatigue. The key to the Transalpina's comfort and support is the ingenious IMS 3 system. IMS 3 combines the outersole, an exoskeleton support structure and a 3D anatomical fit midsole. The outsole is exclusive to AKU and is a lightweight deep lugged Vibram unit combining durability with traction and stability. Cushioning and support is provided by the internal PU and EVA midsole which then extends up and around the heel to provide additional support and pronation control. The IMS 3D midsole provides a natural rolling flex to the boot without it being too soft or too stiff. The shape of the midsole itself mimics the natural foot shape to cradle the foot in a natural position reducing fatigue and internal movement. The internal shape of the boot is dictated by the last, a solid form that the boot is built around. AKU use an anatomical last which gives room around the metatarsal heads (toe joints) and control and support in the heel area minimising slippage and friction. The uppers are a mixture of leather and synthetic materials to provide durability and breathability. The synthetic material is made from Air 8000, an incredibly breathable material that breathes 11 times better than traditionally made fabric boots. Fully Gore-Tex lined for complete waterproofness. All together the Transalpina is a supremely comfortable and high performance trekking boot suitable for walking in varied terrain and for longer treks in the mountains.