I have several pairs of Fit Flop sandals and 2 pairs of short boots - all are supremely comfortable and I LOVE them! I'd love to get a pair of the long boots, too, but I have the dubious pleasure of possessing HUGE calves! Do any of you know how generously-sized they are? They do give measurements on their website but I'd like some anecdotal advice from the 'experts', too, please. Many thanks.