Our ``Duality`` double hanging chair is designed for outdoor use but can be installed indoors just as well . It`s structure is composed of tubular stainless steel while the seating is marine grade teak wood . The set comes with a ``Sunbrella`` fabric mattress and two pillows for added comfort . ``Sunbrella`` fabric is the most recognized outdoor material available . It is UV , mold/mildew , fade and stain resistant . Stuffing is ``QDF`` quick dry foam and all sowing is made with ``Gore`` thenara UV , mold and mildew resistant thread . Our ``Duality`` sea inspired hanging chair is conceived for long lasting worry free service in the most demanding outdoor environments .