Vintage Long Sleeve Striped Dress

This is a wonderful long sleeve dress from the 70s. It feels like mostly or all polyester. Deep blue fabric with gray stripes and red accents. Small shoulder pads, and a one button closure in the back with nice keyhole feature. There is a matching removable cloth belt with male and female snaps on it. I wasn't sure how this supposed to work, so I just tied it around for the pics. This one is thin, light weight, sheer, soft and super comfy. It's in excellent condition with years of life left! The tag says Size 9, but here are the exact measurements taken laying flat (be sure to reference the last photo to see how I measure dresses) 

Bust 18"

Waist 10" (elastic here stretches to about 15")

Hips 22"

Sleeve 24"

Length 42"