PUMA Women's Mobium Ride Night Cat Powered Running Shoe 100% Manmade Imported MOBIUM BAND 2D - An elasticized band fused to a stretch TPU equates to 2 degrees of stretch. This band runs from the lateral heel to the medial forefoot and compliments the natural pronation a runner has. From heel strike to toe-off the Mobium Band allows for natural propulsion. It works dynamically just like your foots tendons: the more force that is applied to it, the more spring it returns; EXPANSION PODS - provide targeted flexibility, and are designed to align closely with the foots bone structure so that it flexes at exactly the same place and in the same way that your foot does; Rubber sole Mesh running shoe featuring LED light on tongue for low-light conditions and Mobium XT Band on outsole to enhance natural movement Lace-up vamp Expansion Pods at forefoot for cushioning, protection, and flexibility EverRide+ outsole for cushioning EverTrack high abrasion-resistant outsole