use it to swim in the ocean.have a thicker one(Lavacore)for winter and this is for summer,protection against seaweed,Jellyfish,sun, ect.but the other two ive owned(different brands)irrattaded my chest area(nippels),was going to buy rip curl high end,Ebomb or excel or oneil hyper freak but this one was on sale so i tried it.smooth as silk,no irritation and very form fitting,love it.very thin so i don''t know how well it''ll do against jellyfish,we''ll see.
also,i put true to size,its a little on the small,but i''am thin so for me its ok.

I normally wear an XL T-shirt which was the same for this rashguard.  The style looks good also.

I love rip curl's rash guard this is the second one I purchased they feel great fit well and they are very durable. I swim 4-6 days a week they get a work out.

I haven''t used it yet, but the size is perfect. Size is always my problem because most fit me too tight but this one was excellent. And I loved the colors.