Greenline Shade and Shelter supply Shade Sails to Cover 4000m2 Greenline Group Pty Ltd Greenline Shade and Shelter supplied shade sails for the Myer carpark Robina on the Gold Coast. The massive project, spanning an area of approximately 4000m2 features a multiple hypar shade sail effect. This project is one of many proprietary designs by Greenline Shade and Shelter that combine aesthetic appeal with effective shade cover.