I was quite uncertain as to which size to order...the reviews were mixed on the subject...so I finally called Teva's customer service.  Normally I take a 6-1/2 and since they only come in whole sizes I didn't know whether to size down to a 6 or up to a 7.

I told her my foot measured 9" in length.  The rep said they ran small so I should order a 7.  Luckily, right before I hung up, I happened to mention that I planned to buy them on Amazon.  She said "Wait! That's  different!"  She told me Amazon's stock was from an older overseas shipment and ran larger...buy a 6.

I did, and she was right...they're perfect!  Just thought I'd pass this nugget of info along to help other half size wearers.  :)