https://batchenangmua.net/o-du-lech-tam/
is a must for sunny outdoor seating areas. A standard umbrella consists of a canopy—usually made from a water-resistant UV-protective fabric, such as Sunbrella or Ottertex—and a frame, which can be wood, fiberglass, aluminum, or other materials. Cantilever umbrellas, which have an offset pole that lets you use them over a table or another piece of outdoor furniture, offer even more shade than traditional patio models. A good cantilever umbrella is also sturdily constructed to keep it from tipping and to prevent the umbrella fabric from fading in