Aqualung Rashguard Long Sleeve (Women)The name rash guard (Rashi) reflects the fact that the shirt protects the wearer against rashes caused by abrasion or by sunburn from extended exposure to the sun. They are designed to be worn both in and out of the water while providing full UV protection, ward off jellyfish stings or add an extra layer under your Aqua Lung diving suit. Key features Polyester made with recycled plastic bottles. 85% recycled polyester 15% recycled elastane. Slim fit