Today, the Aireator Sako 7 still leads in durability, wicking, drying, and air permeability. The Hi-Top version features a taller, ultra-light single layer cuff design which sits very nicely on the calf muscle.Defeet Sako 7 socks are a creation from Sean Sakinofsky, a DeFeet devotee and lifetime fan based in Cape Town, South Africa. The name Sako7socks comes from his nickname: Sako, his lucky number 7,