1、SPEED CONTROL: Helps beginner skiers learn how to control speed by edging and making a wedge, creating a fun and frustration-free experience! 2、EASY SKI LIFT ACCESS: Easy mount and removal with a simple secure clamp system. You can even work the clamps with your gloves on!  3、SAFE AND NON-DAMAGING TO TOP OF SKIS: It is designed to stay clamped to the skis until you want to remove them. No more fiddling with hard-to-maneuver thumb screws that won’t stay tight. 4、PORTABLE: Compact size makes it easy to keep in your pocket until ready to use. One size fits all, good for all ages. 5、SKI INSTRUCTOR APPROVED: Teach proper positioning and fundamentals in a controlled environment. Your beginner skier will love the extra help it provides! Material: PP + latex tube + zinc screw Color: yellow, red, green, black, dark green Size: about 21*3.5*1cm Telescopic length: about 15*25cm Suitable skateboard thickness: about 2-8mm 1*Ski tip connecto