The Rossi 906 Boulder is a wide, deep fitting workboot. The cut in the upper is nice and full, so it’s perfect for our wide-footed friends, those with high arches or a standard size foot that needs an orthotic. We use the highest-quality full grain kip leather – it’s supple, robust, and ages well. The Enigma TPU outer sole is slip, oil and acid resistant, while the PU midsole supplies cushioning comfort. QUALITY CERTIFICATION All Rossi boots are manufactured under the guidance of ISO 9001 Quality Management System. TECHNICAL FEATURES UPPER Full grain kip leather Double stitched elasticExtra thick backstrap SOLE Enigma TPU/PU dual density sole TPU outersole Lightweight and flexible Slip resistant Oil and acid resistant Ladder grips PU midsole Deep comfort Optimal impact response Side impact protection FOOTBED Moulded polyurethane Absorbs heel strike Retains shape after compression