Actually, hammock has been used since hundreds of years ago. When the technology in manufacturing hammock is still very simple, it’s like a rope swing to rest. The hammock is also used by Columbus to explore the world. Today, the hammocks turn into several models with a number of features and materials. In some countries, it is used as a tent. This is because the hammock is lighter and can be set up easily. It needs two trees for hanging up a hammock, yet it can also be set on a cliff or anywhere. You can see thousand hammocks photos with their specification on the internet and find which one your favorite.