Creating a new category of furniture and redefining outdoor furniture in the process is nothing new for Telescope Casual. Introducing the Leeward Sling Collection. The frame is constructed of super high quality Marine Grade Polymer (MGP). This high tech material has been used for over 20 years by shipbuilders on the topsides of high quality sailing and motor yachts. Combining this high quality durable material with Telescope's awesome sling selection provides a classic comfortable collection that will last and last and last.