Features:Lightweight, agile trekking shoe with a modern style. Inspired by trail design, the 9.81 ENGAGE MID GTX provides excellent grip, stability and protection on slippery surfaces.Upper made of high-permeability, high-tenacity polyester for protection and breathability.G-Wrap technology for improved stability inside the upper.GORE-TEX® Extended Comfort membrane (BlueSign® certified)Midsole with monobloc EVA foam for improved cushioning and response.Recycled Ortholite® Hybrid Plus™ sockliner, containing 50% recycled foam.Material composition:Mesh upper - 100% recycled polyesterStraps - 100% recycled polyesterInsole Ortholite® Hybrid Plus™ - 50% recycled PU foamMidsole - 15% bio-based material from sugar caneCollar mesh - 100% recycled polyesterLaces - 100% recycled polyesterGore-Tex® membrane - BlueSign® certifiedTechnology:Vibram® - increases traction by up to 25%, adding stability and increasing the contact surface by 50%.Anatomically Directed Design - increased comfort and fit thanks to a shoe construction that takes into account the anatomical features of the foot:Additional comfort thanks to the upper that bends in the same places as the footMore room for the big toe in the front upperAsymmetric collar for better stability, especially when overcoming difficult terrainShoe tongue that stays in place thanks to its shapeAnkle inserts for greater support and stability