- U990GR6 - Castlerock/Moonrock - The MADE in USA 990v6 quick strike in Castlerock and Moonrock - Mesh upper - Premium suede overlays - Embossed "990" branding - 'NB' embossed at the heel - Reflective details - Lace closure - FuelCell foam - ENCAP midsole - Rubber outsole
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