I asked the person who sat on this and fishing in the backwaters of a near by reservoir with what material he made this one ??? I was impressed by his answer when he told me a story. He made this one of waste plastic bottles and thermocol sheets that we get in TV and AC boxes. One day when he was fishing he saw few thermocol sheets were floating on the water surface then he thought why couldn't we use these sheets and make a platform which can carry a single person for shorter distance.so this one come out of that idea.