Hey Misty,
I am getting my baby boy in April but let me share things that I learned from people here on YT...Belly bands are like diapers (excluding the butt part)...They actually get wrapped around the boy's belly so that they wont lift their legs, mark or pee all over the house...You may place a female hygene pad inside them to prevent your baby's belly being soaked in urine...I actually just ordered two pairs of them...
I really dont know why but I really wanted to have a boy...This might be because all other pets I have ever owned were boys and I kinda know how to deal with them...
I think it might be a good variety for you to have one boy and a girl (and of course if you get it)...
Hope this helps!
-Isil