The easy flexing boot for junior all-mountain skiers, the RSJ 60 offers the perfect blend of comfort and performance for skiers ages 10 and under. The junior mono-injection shell, Control Fit liner, and four-buckle design address the junior fit for smaller calves and foot shapes to deliver enhanced junior specific comfort, warmth and performance. The Fit of the boot (or last) is the width of the foot measured at the 5th metatarsal (widest part of the forefoot). It determines the level of control and precision of the skier. For a good ratio between comfort and control, choose a boot that matches the overall volume and length of your foot. Fit between 92-95 mm: Narrow, Fit between 97-99 mm: Medium, Fit between 100-102 mm: Comfort Flex 60 Comfort Stifness The “flex” of a boot indicates the level of support that boot will deliver. The greater (stiffer) the flex index, the more rigid and reactive the boot will be. The lesser (softer) the flex index, the more tolerant and comfortable. Level 60 Beginner Expert Choose the boots which offers the best ratio between comfort and performance. For a beginner skier, we recommend a flexible flex (<80) and for an expert skier we recommend a higher flex (>90).