Fruit of the LoomMen's Polo ShirtOEKO-TEX STANDARD 100

What size would i need for 48"/50" chest

Does the collar keep its shape after washing ?

Im trying to order 6 of these my chest size is 41, but your size guide is useles! Why does it say 0.9 or 1 on every chest size?????

What chest size is the 3xl doesnt say in size chart