Enjoy high-end support without putting your foot in something that feels like a velvet-lined vise. Burton's Women's Iroc snowboard is the stiffest Burton women's boot available but it doesn't trap you in an unyielding design. The Iroc has Burton's Imprint 3 liner with a plush cuff for an exceptional fit with external polyurethane Energy Panels that enhance rebound and support without a lot of bulk. The Imprint 3 liner also has Burton's Outlast® Adaptive Comfort technology in the footbed to reduce perspiration inside the boot and minimize chill. A power strap cuff closure on the liner improves the support while keeping the tongue in place. The Iroc also features Burton's Speed Zone™ Lacing System so you can cinch it up over certain areas where you need additional support or a just little more flex. This is done by pulling a Lower Zone lace handle until the boot is tight over the ankle area then adjusting the Upper Zone lace handle until the cuff region feels right. When you're ready to go tuck the handles into their respective pockets outside the liner and get into your bindings. Burton's Speed Zone lacing guides also micro adjust so you have even lace tension where you need it potentially reducing foot fatigue and eliminating painful pressure points. Those pressure points were probably already eliminated in Burton's new True Fit measuring program a female-specific foot measurement study that included the analysis of over 440 pairs of feet and more than 125 boot prototypes tested on various mountains. The result was a whole new series of Burton shell and liner lasts specifically designed for women enhancing fit heel hold circulation and insulating warmth. Oh yeah--the Iroc snowboard boots feel pretty good too. The thermo-engineered heel cup in a narrower pocket optimizes the heel hold so it doesn't go away after a 100+ day season. Because of all the changes on the inside of these women's boots Burton also refined the exterior outsole shape creating less drag along the heel and toe even when you're riding on a board that's possibly a size too small (results may vary so pay attention to the sizing chart).