Hammock is not only for recreational purpose in outdoor or indoor area. Rescue teams use hammock as place for sleep or get rest after mission. For such reason, hammock must have ability to handle four seasons regardless where to use. One of recommended product for this purpose is Clark N-270. It has military grade material that strong to prevent penetration of water and wind. As best 4 season hammock, manufacturer put six pockets to give space for storage. Most importantly, this hammock can repel mosquito to keep comfortable stay at open area. Strong rope will handle any two persons at same time.