The Softball Toe Tunnel is an accessory to the Softball Power Drive which trains pitchers not to heel drag as they drive off mounds rubber. This is a great training tool for those pitchers that have the habit of rolling over their ankle/foot to a heel drag position. Heel drag acts like a boat anchor reducing power from stronger lower body and pitch velocity. Power Drive Performance and Winning Pitchers Professional trainers designed in lessons for over a year. Amanda Scarborough, Texas A&M two time All American and Denise Davis, owner of Planet Fastpitch also tested the Toe Tunnel in lessons. The result was the perfect design, size and placement that corrected pitchers heel drag. The placement of the Toe Tunnel was designed specifically to be in front of rubber at toe touch point to ground and extends out where heel drag occurs. It locks into the Softball Power Drives US Patent mount channel. Two models were designed for age appropriate training and practice reinforcement. A Youth model and Collegiate model. The Youth design supports proper training for less experienced pitchers with a narrower, longer and higher design. This also supports a smaller foot size. The training area dimensions are 7" L x 5 3/4" W x 5" H. The Collegiate model is designed for experienced pitchers with a lower profile, shorter length and larger width to accommodate a larger foot size. The training area dimensions are 5" L x 6 1/2" W x 3 3/4" H. All Power Drive Performance training aids are designed through thousands of lessons to allow proper practice to learn skills to increase game performance. Toe Tunnels are made 100% in the USA of American produced steel. Both models are available in metal or turf for use with cleats. They both are available in silver or black colors and come with a 5 year warranty. The best to your training!