The first and only harness that was designed specifically for snowboarding but also works great for skiing. A harness that combines a kids backpack for your young student and a retractable leash for the instructor. Included: A small backpack 10”H x 8”W x 2”D A retractable leash that extended 16ft with bungees. Removable and adjustable Seat Harness offering extra support for your little one. Tested and approved by CASI (Canadian Association of Snowboard Instructors)   FEATURES:The Leash -  With the retractable leash, you can now decide the distance between you and your student with a simple push on the stop/release button with your thumb. Let your child go on his/her own. Press the stop button to slow him/her down, prevent a front edge or make them turn. When hitting the stop button, the bungee cord will extend slowly which will not cause a jarring effect on the student. No more playing human yo-yo with your child. There’s no lock button on the leash, only a stop button. CE APPROVED The Backpack - MDXONE “OX” is a small backpack/ 5 points harness (10”H x 9”W x 2”D) Optional/removable seat harness for extra support, especially for the little ones Three attaching points for the Leash. Chest and waist adjustable straps Chest and waist adjustable straps. CPSIA CERTIFIED