I have been running a little over a year now and always had problems with my posture/form. After ditching my traditional running shoes for these minimalist Merrell's, I can maintain PERFECT form throughout my long runs outside AND never experience any more knee pain! Once you slip your feet into a pair of these shoes you'll wonder why you ever bothered buying any other brands! They are ultra-comfortable and so lightweight, yet sturdy and snug. You can literally FEEL the difference in your posture, I truly think these shoes are well worth the money. They're also 100% cruelty free and so adorable! I should add that I had purchased the aqua ones at first, however when they came they looked nothing like the picture! But I easily exchanged them for the light pink ones with absolutely no problems and am very happy with my new running shoes - I am a Merrell customer for life! 10/10, definitely recommend!