I have had several pairs of Merell shoes and these were too big.  I should have sent them back but figured with socks that I would be able to wear them anyway.  So, far they are still in the box.  These shoes do have wonderful arch support and cushioning of the heel. These shoes have a rubber sole that does not have tire tread that could catch and make me trip.  I still love Merell shoes and would order another pair, or preferably try them on  first.