Quiksilver Line Up Short Sleeve Mens Rash Guard - The Quiksilver Line Up Short Sleeve Rash Guard boasts a loose fit and is Flatlock stitched to ensure that you have a comfortable and very durable garment to guard against the friction that reek havoc when you're heading out on the surfboard. The sun can be cruel when you're spending the whole day in the water which is why this rash guard has a UPF 50 rating to help prevent sunburns from sneaking up on you.