Anyone who knows me, knows I LIVE in striped T's.  I made the one pictured as a sample for some upcoming classes that I'll be teaching.  It has long sleeves, a Bateau neck with a button shoulder/sleeve vents with grosgrain trim and side vents at the bottom opening.  It's made from a beautiful navy blue and white synthetic yarn dyed striped (the stripe is knitted into the fabric as opposed to printing on top of the fabric) double knit, purchased from Piedmont Fabric.  The gold nautical star buttons and vintage striped rayon grosgrain ribbon at the neck and sleeve vents were acquired from the ReCrafting Co.  I made the pattern for this Breton Striped T-Shirt,  using my body measurements.  I'm fairly happy with the fit.  I would only make the armhole and bicep a little smaller to match the slim fit of the body.  I'll make those changes on the next one I make up.