Candles
These are technical fabrics (usually high density polyethylene or acrylic) cut in asymmetrical, triangular or quadrangular shapes, which are tensioned by means of stainless steel poles and traction fittings (cables and tensioners).
Technical details:
Shape: Looks like a combination of two triangular candles.
Fastening: Uses steel poles and direct anchoring to the wall of the house.
Fabric: From the transparency that can be seen, it is usually a micro-perforated technical fabric, which allows air to pass through (avoiding the sail effect that could tear the anchors) but blocks the sun.