trim to fit

I did not order these for my sneakers.  I ordered them for my boots... I have not been able to wear them more than an hour due to my Plantar problems.  Special shoes are very expensive and I don't want to wear sneakers all the time.  I trimmed them to fit my boots and although they fit tighter, my feet have never felt better and I wore them a full four hours today!  I love my boots and it saddened me that 120.00 boots stayed in my closet for almost a year before I decided to buy these to try.