What You’ll Feel We’ve even redesigned the skis for our littlest team members. The Firebolts are a scaled version of the X-Calibers, taking advantage of everything we expect from the skis designed for big kids behind the boat. A detachable stabilizer bar helps maintain proper ski spacing, improving balance and control when learning. Adjustable horseshoe bindings, a specially designed training rope and two handles (one for child and the other for the boat end) complete the set. 46” (up to 80 lbs.).