Introducing the all-new Surge 100! A 3-wheel option from K2's Hard Boot Collection. Crafted to meet the demands of skaters at every level looking for much more speed in their skates. The Surge 100 embodies K2's signature comfort, with hardboot shell support, and unwavering durability. Performance stepped up with the all-new hardboot design, featuring a polypropylene shell and TPE cuffs for unparalleled 360-degree support. Keep your feet staying cool and comfortable with built-in Vortech airflow channels while securing the perfect fit with adjustable instep ratchet straps and K2's signature Speed Lacing System. Engineered with an extruded 6061stamped aluminum frame for optimal maneuverability and stability, complemented by 100mm 82A wheels and ILQ 7 bearings for an ultra-smooth and fast ride that you’ll feel in every stride. The liners are patterned off the same lasts that have been the standard of comfort in K2's skates for over 30 years. They include a shock-absorbing footbed, a removable heel wedge, and made with recycled PET mesh materials. Whether you're cruising around town, hitting the trail, or racing down the open road, the Surge 100 has all the key ingredients to take your skating to the next level. Cuff Support TPE Cuff Hardboot Axels Threaded Hollow Steel Hardboot Shell Polypropylene Composite Skate Frame 6061 Extruded 265mm Skate Bearings ILQ 7 Max Wheel Size 100mm Wheel Size 100 mm Collection Hard Boot Category Lifestyle, Recreation Sizes M 5 / W 6, M 6 / W 7, M 7 / W 8, M 8 / W 9, M 9 / W 10, M 10 / W 11, M 11 / W 12, M 12 / W 13, M 13 / W 14 US MEN'S* US WOMEN'S UK ADULT EURO ADULT FOOT LENGTH (CM) 5 6 4 36.5 23 6 7 5 38 24 6.5 7.5 5.5 39 24.5 7 8 6 39.5 25 7.5 8.5 6.5 40 25.5 8 9 7 40.5 26 8.5 9.5 7.5 41.5 26.5 9 10 8 42 27 9.5 10.5 8.5 42.5 27.5 10 11 9 43.5 28 10.5 9.5 44 28.5 11 10 44.5 29 11.5 10.5 45 29.5 12 11 46 30 12.5 11.5 47 30.5 13 12 48 31 14 13 49 32