SwimZip offers the best long sleeve zipper rash guard swim shirts. All of our rashguards come with UPF 50+ sun protection built right into the material for easy all day sun protection blocking 98% of UVA and UVB rays. SwimZips signature full length zipper makes getting into and out-of our rash guards incredibly easy! Easy to toss on for a day at the pool or beach when UV exposure is highest and spf protection is most critical. Left hand zip. SwimZips long sleeve mens rash guard swim jacket is the best SPF / UPF sun protection swim shirt option. SwimZips award winning zipper rash guard swim shirts have a number of thoughtful features, including a zipper garage, a "no-pinch" zipper flap behind the zipper, flat-lock seams to reduce rubbing, a thumb hole to keep sleeves in place, and a loose fit design for all day comfortable wearing. SwimZip sun protection swimwear has been featured on national television to an audience of over 6 million viewers.