The Stella McCartney x adidas women’s UltraBoost Sandal ‘Triple White’ delivers a blank-slate colorway of a hybrid silhouette as envisioned by the British fashion designer. An open vamp enhances the breathability of the Primeknit upper, reinforced with synthetic overlays and built with recycled materials including Parley Ocean Plastic. The lightweight assemblage is mounted on a full-length Boost midsole, supported underfoot by a Stretchweb outsole made with Continental gum rubber.