Fit exactly as my other Chaco flips and no break-in was required. Nice trail tread.<br />I've tried the squishy ones and I don't like not feeling where my feet are going. They also absorb water, and if you wear them in water, the strap pulls out.  That's when you go get some Chacos.  As for those who say Chacos are &#34;too hard,&#34; that's called support -- feet need that. I am very particular about the health of my feet, and am happy that I am able to wear flip-flops -- they're called CHACOS. Get some, you'll understand.