Contact Name: Olin B. Phone: 205-XXX-XXXX Email Address: opXXXXX@hotmail.com Comments or Questions: I bought three of the lightest X1 blades and they have worked well, but some of my shoes have more flexible soles than others. Can the blades be retrofitted to a more rigid level? Thanks.
Clyde's Response - I would suggest you move up to my X1 Blade Shoe Stiffner - medium density.