shell material: polyurethane cuff material: polyurethane last width: mn (medium-narrow) flex index: 80 wedge: 43mm fis approved cuff profile: jr liner: performance fit jr foot bed: performance pro jr buckles: integrated profile 4 micro alu 2 servo-lock on cuff macro adjust: screwed-on ratchets velcro strap: 35 mm rear spoiler: quick set sole height: 45 mm size range: 3 - 8.5 uk