Kookaburra Woven Shade sails are the most effective sail shades for offering maximum UV protection. The ultra-tight weave of the fabric has been independently tested to UPF50+ making these shade sails near impenetrable by sunlight. More than 98% of harmful UV rays are blocked out as a result. Beautiful, useful and festive, perfect for adding decoration whilst bringing a little comfort to those hot, hazy days outside.