SPERRY TOPSIDER. STS84169. WOMENS CREST VIBE MULE SNEAKER. WHITE. The classic Crest Vibe in a mule style. Lightweight and breathable canvas uppers in classic core colors with genuine rawhide laces and barrel ties for easy on off and a secure fit. Memory foam insole provides all-day comfort and a flexible non-marking rubber outsole with original razor-cut Wave-Siping provides ultimate traction.