Two years ago I got a purple pair, held up great, walked in it a mile daily, still in great shape. Wide calf, and feet, and ankles as well, and this is coming from a person with super "cankles" and extra extra wide feet.
I got a new navy-polka dot pair yesterday, and it feels a lot less sturdy. Feels like the rubber is not as tough, and more "squishy" under my heels.
I will keep it, because it looks great, and I will add an update later if there's any issues.