Coolaroo Medium (64-70%) provides the ideal level of protection for both plants and people. It is the world's most popular choice in outdoor fabrics. High tech Monofilament and tape yarn: Coolaroo Domestic Medium knitted fabric is manufactured from a high tech fibre which is UV stabilised to maintain flexibility and strength while exposed to long periods in the sun. Knitted lock stitch construction: Unique lock stitch construction combines Monofilament and tape to produce a dimensionally stable fabric that will not tear or fray if cut. The fabric keeps you cool: Coolaroo fabric has the ability to breathe..to allow air to pass through the fabric. This effect combined with shading creates a much cooler environment underneath the fabric. Cheaper than solid sheet roofing - and also cooler, because the air can pass through. Unique Heat Set Process: Coolaroo domestic Medium fabric is put through a unique heat set process known as "stentering" which heat sets the fabric to produce a stable and consistent fabric that has minimal shrinkage.