Rubber sole The adidas Yeezy Boost 350 V2 “Sulfur” is yet another standout colorway in Kanye West’s signature shoe collection with adidas. The “Sulfur” design falls into place among the many versatile, if not muted looks that encompass the 350 V2 lineup. The knitted Primeknit upper, heel tab, and laces are dressed in a green-yellow hue. The monofilament side stripe features a contrasting two-toned monochromatic and black design along the mid-panel. A gum rubber outsole constrasts the Sulfur midsole. This versatile silhouette is finished off with adidas’s Boost technology embedded within the midsole, which provides ample amounts of cushioning for all-day comfort.