This is a 1 piece outfit consisting of a red outer layer and a cotton white jumpsuit with a zip all the way down. The back of the outfit has the Ultra Max logo on it, and on the tag it has 'Tiger' written on it. The outfit also came with some plin white crew socks (not pictured)
The costume tag is marked as 'Photo DBL' so this may not have been worn by Eliza Coupe, but it also shows it's use in many scenes as shown in the picture.