Very inexpensive given the LOT of fun they will provide to your kid.  They are thin, but not flimsy, they are ok for where we live, which is quite hot, making them perfect for being outdoors in the sun.  They do run a little small, but I find kids nowadays are bigger than the size charts generally speaking, my boy is 3 and I always buy size 4 or even 5 in all brands, so this was no exception, but I cannot say they are smaller than other, so it is ok.  The tape that ties them do leaves a lot of glue on the chest figure, so remove it with another piece of tape by sticking and pulling it several times before you wash them, just a couple of minutes, nothing to worry about.