The DeFeet Aireator Sako 7 where created by Sean Sakinofsky a passionate DeFeet devotee based in Cape Town South Africa. The DeFeet Aireator model features a 6 single layer cuff and the original air-flow design for breathability durability wicking and air permeability. - A.D. Key Features: DeFeet Aireator Sako 7 6 single layer cuff Original air-flow design Breathable and durable design Wick sweat away Air permeable