the atomic redster jr 60 is the choice ski boot for any marcel hirschers of tomorrow - with a cool four-buckle design and our classic atomic racing colors. key features new buckles progressive cuff and flex size adjuster redster jr 60 ae5013660 the atomic redster jr 60 is the choice ski boot for any marcel hirschers of tomorrow - with a cool four-buckle design and our classic atomic racing colors. but what makes these boots extra special is they're not just scaled down versions of the larger ones - the design of the cuff and flex alter as sizes go up to fit the skier. they also have a harder flex for more acceleration than any other jr models. they feature full-on world-class 3m™ thinsulate™ insulation in the silver liner - because no-one wants to ski with feet they can't feel. and the boot now comes with a size adjuster that adds an extra half size to the boot when you need it. flex: medium weight: 1473 g / 24.5