70s Overall Jumpsuit in Taupe - XS Petite Misses - Juniors - May fit some Girls
I think these may be a form of velour - not certain, not as soft as velvet, almost have a corduroy feel but with no wale.
Button inside with straps. No other closures.
No size tag - Compare measurements to item in similar style/material that fit you well. Fits petite - I am 5'1" XS and these fit snugly as shown.
31" bust, 27" waist, 34" hip, 31" inseam, 54" long from shoulder, 28" from shoulder to crotch. Model is 5'1" 31/26/34 and jumpsuit fit great - the only tricky aspect was leaning down to pick things up! Model was able to move and sit comfortably.
Flaws: Fold line above hem from previous higher hem.

This item is sold from an excellent, highly rated vintage boutique.