I've been wearing them every day for 2 months now. Legs always slip backwards. The "New Improved" back collar is fabric only. The so-called back collar is so loose that it does not help to support the legs when worn normally. Did I really pay $100 for these shoes? Don't repeat the same mistake! I bought these as my regular shoes (Merrell Encore Bypass) were not available at the time. I had to wait for the Merrell EncoreBypass shoes.