Shop the Nike Dunk Low 'Astronomy Blue' HM9606-400. Upgrade your Sneakers collection today! The foam midsole offers lightweight, responsive cushioning. The low-cut, padded collar looks stylish and comfortable. Classic rolling circle rubber outsole adds durability, traction and traditional style. Shop the Nike Dunk Low 'Astronomy Blue'. Upgrade your sneakers collection today! Closure:lacing. Toe type:round toe.