No boot has made more riders happy with proven technology, comfort, and performance – now featuring the selected fits of the Dual Zone Boa System with Coiler technology. With its ability to push personal skills to a professional level, the Burton Ruler Boot is perfect for bigger drops and bolder tours. It's ideal for riders seeking the performance of the Ion but on a tighter budget. The Dual Zone Boa System with Coiler technology allows for adjustment of the boot shaft with a single turn, combined with the durable New England laces available exclusively at Burton, backed by the Boa guarantee. The 3M Thinsulate insulation of the inner boot and the additional warmth from the heat-reflective sleeping bag foil withstand arctic gusts. The Medium Flex PowerUP tongue endures long use and provides continuous riding comfort day after day.