The Concepts x AM 1 SP 'Heavy' is a special collaboration sneaker between Concepts, a Boston-based sneaker boutique. The shoe was released in 2013 and features a unique colorway inspired by military-style heavy canvas materials. The upper of the shoe is constructed with a mix of olive green and black heavy canvas and ballistic nylon materials, while the midsole is a contrasting white color with a gum outsole. The shoe also features black accents throughout, including the Swoosh and laces. This limited-edition sneaker is a popular choice among sneaker enthusiasts who appreciate the unique design and collaboration aspect of the shoe.