An exercise in optimal designs, by swapping its vulcanized outsole with a semi translucent rubber cup sole, designers at adidas Originals (or just simply adidas at the time) realized an immediate difference - an overall weight reduction of 25% in comparison to the regular adidas Originals Gazelle, intended for outdoor. Its viscous, non-marking outsole made it the perfect footwear for arena sports. Hence, its designation as Gazelle Indoor. Part of its Inline Archive Series, adidas Originals is bring back the adidas Originals Gazelle Indoor this season in its original construct, right down to those opaque outsole. To be available at select adidas Originals retail locations starting next month.