The Reebok 9K Pump Goal skates offer every option for performance and comfort. The 9K features The Pump - Technology is the ultimate in personalized pro performance and comfort. The 9K boot is made of Pro Armour III R-Core Quarter and Lightweight Pro Armour III Quarter strategically reinforced to provide structural support and stability without compromising weight. The boot liner is PlayDry Liner with water repellent black clarino liner that ensures comfort and features anti-microbial Ultra-Fresh treatment. Other features are flex-Cuff - The new molded asymmetric Flex-Cuff functions with The Pump technology ankle bladder to maximize comfort. The cowling comes with the Thrust Blade - Replaceable steel runner system.