I have searched for this model for several months, including at the LLXXXX factory store in Maine, and could not find a size that fits my Fred Flintstone feet. It took me 2 tries but I got it right. The original size was too small, so please order a little larger. Ideal for quick outings and comfortable to wear for a while. They're a bit stiff at first, but the longer you wear them, the softer the rubber becomes.