adidas adizero Prime LTD Parley Men's Running Shoes Core Black/White/Blue : Meet a racing shoe that's dripping in style and personality. The adidas adiZero Prime LTD running shoes give runners the look and feel of pure speed. The ultra-lightweight PRIMEKNIT upper wraps so comfortably around the foot that you feel like youre barely wearing shoes at all. A thin section of Boost(TM) midsole technology offers the responsiveness that runners have loved without adding unneeded weight. If you're looking for speed and unmatched comfort and style, this limited release shoe means business. Upper: Engineered PRIMEKNIT mesh with various types of mesh in different areas of the foot provides a forgiving yet snug fit that allows natural expansion of the foot. External heel counter provides optimal heel fit and running comfort. Custom external or internal lacing options for personalized running use. Midsole: BOOST(TM) offers supreme durability with soft and comfortable touchdown and a smooth transition to the forefoot. TORSIONA(R)SYSTEM delivers lightweight arch support that allows the forefoot and rearfoot to move independently for better surface adaptation and stability. Ultralight sockliner adapts to the foot for a custom and comfortable fit. Outsole: STRETCHWEB rubber outsole provides flexibility to harness energy without restrictions.