The shirt fits well, the sleeves are long, and my daughter will be able to wear it for a couple years.  However, the neck binding was too tight to fit over her head.  She does have a large head for her age (she's 4), so I cut the neck binding off, and the shirt still functions well.

I originally ordered the wrong size and called SwimOutlet just after I placed the order. The operator cheeerfully helped me and took care of me.