"The Bolt-963 is a revolutionary all purpose, all sport, speed and vertical training sled.   Old fashion speed training sleds will become a nonfactor, and the need for a vertical training tool is gone, as the Bolt-963 replaces them.   My oldest child has used the bolt for two off seasons. He has dramatically increased his speed, explosion and vertical.  He has taken his forty time from a 5.10 to a 4.81 laser, while his rolling forty has dropped from a 4.86 to a 4.51 laser, while his 5-10-5 shuttle was a 4.21, hand held. If he was still training on the traditional speed sled, over speed trainer, and a one time a week hill workout, he would still be playing football on the B-Teams in a large (3500+ students) 6A high school in Texas.  Thanks to the Bolt-963, he will start on the top JV team as a wide receiver, and he is getting looks with the Varsity squad.  Speed kills, you can’t coach it, but you can change it. The Bolt-963 will do that for your athletes. Any program in the nation that wants to improve speed, explosion and vertical, needs this training tool. If you want your athletes to get stronger you lift weights. If you want your athletes faster and more explosive you need the Bolt-963."