Click Here for Test Results 79% Recycled Polyester / 21% Spandex. SunScreen50™ Activewear 4-way Stretch fabrics are meant for the active person: Easy care Great 4-way stretch Wicks moisture from the body Fast evaporation to keep you comfortable Processed to have a softer hand than most poly/Spandexfabrics UPF50+ UV protection to protect you from the sun Care Instructions for Polyester/Lycra: Wash on low temperature setting using mild detergent Avoid washing with items that have zippers or Velcro, or scratchy items like denim Do not use a bleach containing chlorine Do not use a fabric softener as it inhibits the wicking capability of the fabric Hang or lay flat, and air dry is best Dry on low dryer setting if you must use a dryer * Note that the Neon Yellow should be washed before cutting or wearing. You will also find orange specks in the neon yellow. This is normal. Please see second picture of neon yellow for example of specks.