I found this interesting device
http://sg.88db.com/sg/Views/postDetails.aspx?PostID=875834
Did a seach and found that it can improve run/swim time. Anybro here use this before? Will it improve 2.4 timing?
http://sg.88db.com/sg/Views/postDetails.aspx?PostID=875834
Did a seach and found that it can improve run/swim time. Anybro here use this before? Will it improve 2.4 timing?