Triple stitching & uniquely designed polyester end straps for increased strength and durability. Our Hammocks can hold an impressive 225kg or 500Lbls.We are doing our part for the environment. Each Hammock is made of 37 plastic bottles. We're into Reforestation and plant 4 Trees for every hammock purchased. All our trees are planted in our reserve in Madagascar which employs local villagers. Life-time warranty....