The Atomic Backland Expert is a touring boot with Prolite construction, Frictionless Pivot, and the Boa System for wrapping it all up. It’s the most cost-effective way to experience the Backland innovations, with minimal sacrifice. It ranks high on comfort with a softer liner construction and Flex 90 stiffness rating. Energy Backbone drives power to the skis downhill, and Free / Lock 4.0 system fixes the cuff firmly in place as you switch modes from up to down. Smartly-designed ski boots make ski-touring way more fun.Tech Features:- Prolite- Energy Backbone- Frictionless Pivot- Memory Fit- Boa Fit System- True Flex- Memory Fit 3D- Free / Lock 4.0- Skywalk Full Rubber Sole- Investment Cast Tech Inserts- Tongue Stabilizer Key Features:- Memory Fit: Advanced heat-fitting technology creates a fully personalized shell, cuff and liner in minutes.- Frictionless Pivot:Revolutionary light construction with added reinforcements in key zones.- Energy Backbone:Reinforced, asymmetric backbone provides extra strength and edge grip for powerful skiing. - Prolite: Revolutionary light construction with added reinforcements in key zones.-Boa Fit System:Dial Up Or Down To Creat Your Perfect Fit With A Smooth Uniform Closure So You Can Put Less Energy Into Keeping your foot secure and more into keeping control push in to engage turn to tighen or loosen and pull up the dial for a quick release.