I ordered the retainer kit from SportingSmiles in June this year. They were keep asking me to redo my impressions because they weren't useful. Once they approved my impressions they sent me the retainer but it was poorly made. Covered only half of the teeth and it wasn't stable on my teeth. I emailed them and they said that they cannot make it better that that. Wow! So I returned the retainer and I received less money than I paid for initially! It also took them couple of months for the refund!