Hammock is a light and easy to carry bedding in field activities. The materials for making hammock are usually tied to trees. According to the materials, it is divided into cloth hammock and rope net hammock. Cloth hammocks are usually sewn with thin canvas or nylon cloth, and rope net hammocks are usually woven with cotton rope or nylon rope. The rope net hammock is especially suitable in tropical jungle and hot summer, while the cloth hammock has a wider range of application. It can be used in other seasons except severe cold areas and winter. The rope for the hammock must be strong enough to withstand the weight of one person. Both ends of the hammock shall be firmly fixed on the trunk with ropes. The degree of sag of the hammock shall be adjusted after actually lying down. To sleep on the hammock, first put your feet on the hammock, and then put your feet on the diagonal of the hammock. In this way, you can straighten and avoid unnecessary burden. To avoid getting wet in the rain, we can add a plastic cloth on the hammock. When it is cold, we can also roll it up with a blanket.
