Rubber sole The bolts of lightning yellow and hints of a chaotic sky on the outsole connect Giannis to Zeus, the king of the gods in ancient Greek mythology. The bottom of the shoe is curved from heel to toe for smooth strides. Cutouts in the foam help reduce weight and provide optimal responsiveness (because there's more space for the foam to expand). The shape of the sole in the heel is designed for optimal cushioning every time your heel strikes the court. The heel part of the upper looks and feels plush. It creates a secure and comfortable harness for the back of your foot to help you feel fresh during games. The upper uses an engineered mesh that's lightweight and breathable. An internal strap wraps over the midfoot to help keep you stable when moving from side to side. The shape of the sole in the heel is designed for optimal cushioning every time your heel strikes the court. Morph into all-timer with the Giannis Immortality 2. A plush foam package combined with a more focused fit in the midfoot in a super lightweight design means you can maintain a high level of intensity and focus when victory hangs in the balance—just like Giannis in the clutch.