Ballet Flats High Vamp Slipper Black Nappa Ballet Flats Strass Nappa Lambskin Nina Nappa Leather Ballet Flats Mistral Pollini Ballet Flats High Vamp Slipper Tangerine Nappa. Adjustable mary jane strap with buckle closure Hand applied crystal studs across upper Premium nappa lambskin construction Leather lining and insole Low profile rubber sole Classic ballet flat silhouette ALAIA Ballet Flats Strass Nappa Lambskin deliver Parisian luxury with crystal studded elegance and supreme comfort. Crafted from buttery soft nappa lambskin in pristine white, featuring hundreds of precision set crystals across the entire upper for maximum glamour. The classic mary jane strap with signature buckle closure creates the perfect balance of sophistication and wearability.