Rope hammock offers more freedom and casualness. It also gives more windy sensations from all over. Rope hammocks usually are made of polyester or cotton. You can choose one of them; just remember that each have their own advantage and low sides. Cotton might be the most comfortable fabric, but it cannot withstand the sun as good as polyester. Cotton also easily to rot or moldy in the rain, so it would be great only for indoor use if you do mind with the problems. On the other hand, polyester is far more resistant to water or rain. It also quick dry compared to cotton.