Yes, Denise. They were both adjustable but only to make them bigger, IMHO. I couldn't make them tighter. It's so weird because I always think of my feet as on the wider side of average. I think this is the first time I haven't been able to fill out a sandal. Barking Dog Shoes reviewed the Vana too. Check out hers here http://www.barkingdogshoes.com.....eview.html
ETA: I had to order the FF through Nordies. Their shipping seems like a mule train compared to Zappos. I'll PM you when they get here. I tried the FF slide on at Norstrom today and the front was a little loose but I think the ankle strap will keep them in place. Good luck with the Vana:)
@Magpie: Zappos is amazing! What astounding service. Glad that they Vivians worked for you.