Balance training is a key principle in many of today's sports conditioning and personal training workouts. The Tri-Level Balance board is a great tool to help develop better balance core strength and faster reaction time. Each Tri-Level Balance Board comes equipped with three different height adjustments allowing for a customizable workout depending on a person's level of ability. Fitness Equipment Features:Made from durable ABS plastic Virtually unbreakable under normal useTextured surface prevents slippingUnique bottom adjustment for 3 levels of difficulty14 Diameter"