The Concepts x Nike Air Max 1 SP 'Mellow' features an eclectic design inspired by late-'60s music events. The classic runner is dressed in blue tie-dye denim, lined in burgundy corduroy, and complemented with a cowhide forefoot overlay and distinct kerchief designs on the collar and heel by the Boston-based store. The green mudguard fabric is inspired by a military surplus M-65 jacket. The mismatched Swooshes include flowery and striped designs, and the red velvet tongue has a woven tag with Concepts and Nike branding. The off-white polyurethane midsole is distinguished by a faint mud-splatter pattern.