You are considering a vintage City Streets suit in 

Labeled a boy's size 8 Slim but measures a bit smaller, perhaps a 6. Please see measurements below.

65% Polyester, 35% Rayon. Jacket is fully lined the pants are unlined. Machine washable.

The jacket is double-breasted, and has two welt pockets.

Length: 21.5" collar seam to hem down back
Chest: 15" across front armpit to armpit
Sleeves: 16"shoulder seam to cuff 
Shoulders: 14.5" seam to seam across back

The matching pants have a pleated front, two front slash pockets, one rear pocket, zip fly.

Waist: 11"
Inseam: 20.5" 
Rise: 9"
Hem: 6" 

In great condition!