The FitFlop Uberknit Ballerina is a sporty women's slip-on shoe with a stretch fabric collar and ergonomic midsole. Featuring, Ultra-light, stretchy, breathable, single-piece nylon-mix knit uppers Ergonomic, ultra-comfortable Anatomicush midsole technology APMA Seal of Acceptance, for footwear found to promote good foot health Ergonomically engineered for world-class comfort Elasticated collar for easy on and off Mesh-lined footbed. This Collection makes and breaks the fashion rules. Scouring the globe for inspiration, our Design Team is inspired by fashions most covetable trends, providing you with a cutting edge wardrobe season upon season, Complete your fashion with these Slip-on, Style and versatility, Traction and durability. Features: Style: Uberknit Ballerina-Crystal SKU: Z52-399 (Midnight Navy) Medium (B, M) Ultra-light, stretchy, breathable Single-piece nylon-mix knit uppers Ergonomic Ultra-comfortable Anatomicush midsole technology APMA Seal of Acceptance Ergonomically engineered for world-class comfort Elasticated collar for easy on and off Mesh-lined footbed Weight: 0.78 lbs