Welded backstay adds support; 1:1 Firm Flex PowerUp Tongue for a snug fit between boot and tongue; ReBounce Cushioning placed within the shell of the boot adds a close layer of impact protection; Life Liner uses heat-moldable, lightweight materials and a responsive PU tongue for high-end performance with a relaxed feel Tuff Cuff Lite increases heel hold while enabling free flex from heel to toe; Ultralon Performance Foam adapts the boot lining to the contours of the foot; Outer pressure relief panel; EST-optimized midsole lowers your center of gravity for better board feel Total Comfort Construction with a wider fit provides an instantly broken-in feel; Snow-Proof Internal Gusset completely seals the lower zone of the boot; DRYRIDE Heat Cycle lining keeps feet warmer by capturing body heat and wicking moisture Speed Zone Lacing system allows you to customize the tension with super-fast lacing control; New England Ropes use durable American-made fibers that are easy to re-lace Sleeping Bag Reflective Foil underfoot improves warmth and comfort; AutoCANT Cushioning uses dual-density EVA for natural positioning that improves comfort and board control; 1-year warranty Setting the bar higher in every discipline is still the headline for the Burton Men's Ion Snowboard Boots. Legendary sums them up and makes them an easy choice for riders who hit the entire mountain. Out-of-the-box comfort promotes a relaxed and natural stance with unmatched control for any terrain. Warm, dry, and comfortable feet are a given with heat-moldable liners that reflect heat, manage sweat, and enhance the boot's overall responsive feel.