Light weight, long lasting and resistance towards bending is the key features sofa structure should have. The styling is dependent on the true shape of the product too, so a slight bend can spoil it. In most of the cases the structure will not be exposed, so the high grain wood does not add any value. In fact sometimes it backfires as high grain wood will be heavier in general. So options like Yellow pine and Silver Oak is so apt for sofa structure. High grain teak is used in visible places. As part of our process, wood used is coated with a termite proof material.