You would think if you purchased a sandal you could take them to the pool, the lake, or maybe to the beach, slip them off for some fun in the sun.  But you can’t!  When I left them in the sun the heal cup shrunk about 1/4&#34; around the outside.  Now the sandals are uncomfortable to wear and I have to toss them.  I contact Orthaheel/Vionicshoes about my issue and they told me the sandals have a 6mo warranty too bad.  My pair was about 1 year old but not heavy warn.  I explained it is a sandal you should be able to leave them in the sun without it damaging the sandal and rendering them useless.  They just replied back about the 6 mo. warranty.<br />So while a comfortable sandal the company in my opinion as a defect if you cannot leave your sandal out in the sun.  It is an expensive sandal I expected them to last longer and be of better quality.