5/3mm AKONA Quantum Stretch Wetsuit Hood The AKONA 5/3mm Quantum Stretch Neoprene Hood offers some serious warmth and protection for a variety of water activities including SCUBA, surf, and swimming! A skin face seal minimizes water entry, and a double coverage vented top allows for advanced airflow to prevent overheating. This hood is a great option if youve been looking for an advanced performance hood to upgrade your kit.