How To Care For Nappa Leather Shoes at Debra Masters blog White Sporty Matelass Nappa Leather Sandals Miu Miu Sandals For Women Miu Miu White Matelass Nappa Leather Slides Miu Miu Sand Beige Matelass Nappa Leather Slides Miu Miu. Miu Miu's matelass nappa leather Sandals are distinguished by the matelass work that gives a three dimensional effect to the upper. The design is embellished with metal lettering, while the leather sole and banded leather heel complete the model with elegance and attention to detail.