1.Questions: What fabric? Is it breathable?Are they "see-through"?
Answers: 100%Polyester,lightweight and breathable.I have a aqua Blue one, wear a blue sports bra underneath, but you can't see its color. It is a fairly light-weight shirt. I love it. Not see through.
2.Questions: Is the size of this dress normal?what size should I get?
Answers 1: It's more regular fit so if you want loose fitting, then I recommend going a size up.I'm 5'9",bought M.
Answers 2: I am Height 69.3" , Chest 33.9" , wear Size L.
Answers 3: I’m 5’7, 165 lbs, got the X-Large. It's a good fit.
3.Questions: Can I wear it to the seaside?Can I swimm with this tshirt ?
Answers: Yes. You Can swam in a swimming pool and the ocean.but remember it has a hoodie in the back so you will have lots of drag.
4.Questions: Will the sun protection wash out of the shirt?
Answers: UPF is usually achieved by how tightly the fabric is organized, and should not be reduced unless there is excessive wear.