First time trying the Rainbows - I opted for the double layer for more arch support. (I am tall, got big feet, and feet hurt easily)<br />I did not experience nowhere near the &#34;break-in&#34; pain many reviewers mentioned. I did not bleed or anything between my big toe and 2nd toe.<br />I am still breaking it in I think because I have not worn it all day or anything yet... but it feels comfortable and stylish.<br />Definitely get a size larger as I had to return the first one.<br /><br />Only discomfort I noticed is that when standing for more than 10-15min, my feet bottoms hurt. I think it's due to the arch support that is still rather stiff. It hurt enough that I sat down after 15 minutes of standing in one place. Note: no problems when walking for much longer. Also, I have a fan-out type feet and I noticed that my big toe and pinky toe tend to come over the either edges a bit when I weigh forward standing still. Not a big issue but I worry a bit of bumping the sides of my toes on concrete or something. I should break these in more and see how they fit after a month or two.