My 6 year old daughters flip flops were hurting her and rubbing her foot raw so we bought these while at Pier 39 in San Fransico.  I like more pricer than I wish to have spend BUT ended up being totaly worth it.  They are made of yougo mat matterial and she said are sooo comfortable.  She loved them so much that when she lost one shoe I ordered another pair online from Amazon.com  She absolutely LOVES them and tells everyone about them and how comfortable they are and how much she loves them that it's funny to hear it coming from a 6 year old girl ... soooo you know she loves them and loves to wear them everywhere!!!  They come in womens and mens too .... cant wait to get my own pair now!!!