The FitFlop footwear are footwear in the toning shoe category. They use a ‘microwobbleboard’ technology that induces instability to give the alleged tone up. Curated Resources: http://www.podiatry-arena.com/podiatry-forum/tags/index.php?tag=/fitflops/ (Podiatry Arena) http://www.podiatry-arena.com/podiatry-forum/showthread.php?t=49167 (Podiatry Arena) http://www.toningshoestoday.com/fitflop/ (Toning Shoes Today) http://podiapaedia.org/wiki/footwear/toning-shoes/fitflop/ (FitFlop) http://www.shopping-emporium.net/clothing-footwear/footwear/toning-shoes/fitflop/ (Shopping Emporium) http://www.foothealthfriday.com/fitflops-are-they-worth-it/ (Foot Health Friday)