The quickest, ‘easy-erect’ shelter just got even better with the introduction of the phenomenal Tempest Rapid Shelter. At the core of the bivvy is the renowned patented hinge black, allowing for ease and speed of set-up. The set-up time, usability and functionality have all been enhanced even further with the Rapid knuckle System, enabling all 5 main poles to lock into position in one effortless action. Simple and secure, erecting your shelter has never been easier.