Marine Serre - These black jersey leggings by Balenciaga alumni Marine Serre are designed as part of a collaboration with Swarovski. Anchored by a white sportswear-inspired logo waistband, they're embellished with FUTUREWEAR lettering in Swarovski crystals through the leg. Channel the designer’s penchant for fusing the feminine with the sporty by styling these leggings with the upcycled shirt dress from the collection.