The Dalbello Men's Proton Ski Boots are a classic overlap design boot for athletic intermediate and advancing skiers looking for an easy entry and accommodating boot. Dalbello leads the industry in innovative solutions and the Proton is the choice of many of the most prominent resorts in the world. The Proton has an extra wide opening, mid-entry architecture goes on fast and is easy to close. The overlapping design can volume adjust to different feet shapes and an upper cuff that secures the lower leg and ankle inside the boot. Extra-long ratchet buckles on the cuff comfortably close around legs of all sizes and shapes. The Proton is a high tech, versatile performer that excels in all terrain and conditions. 101mm last.