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The ASICS® Cyber Javelin™ London is an elite performance javelin spike designed especially for high caliber athletes. Lightweight synthetic upper is asymmetrically engineered to improve foot stabilization and durability. Tri-Hook-and-loop Closure System provides a customized, supportive fit. SpEVA® midsole offers improved bounce-back characteristics and helps decrease midsole breakdown. Dual-density plate gives maximum energy return. Comes with 9mm compression spikes and a wrench. Non-removable insole. Wt. 11.4 oz.