SIDI Crossfire 3 Boots - Black Replaceable shin plate Micro adjustable and replaceable buckle system Flex-system upper Exclusive and patented flex-system with hyper extension block Fully adjustable calf area Wider calf upper (+ 3 cm) - adjustable system between the calf, shin and leg upper which allows to widen the circumference of the boot and accommodate even wider calves Replaceable metatarsus inserts Toe area covered with plastic reinforcement Rigid, shock resistant, anatomically shaped heel cup Assembled and replaceable boot leg: stitch-free Nylon inner sole with removable arch support pad Replacement parts available. SIDI boots are a narrow fit and they recommend going up a size from what you would normally wear. Size conversion (approximate only): EURO 40 = US 6.5-7 EURO 41 = US 7-7.5 EURO 42 = US 8-8.5 EURO 43 = US 9-9.5 EURO 44 = US 9.5-10 EURO 45 = US 10.5-11 EURO 46 = US 11-11.5 EURO 47 = US 12-12.5
