Funky Dorsay Canada Jumpsuit - 1970s?

[Vintage Sparrow]

Hope the photos are clear enough. No mannequin to model this one. I'm thinking 70s from label and pattern, but can't seem to find anything about Dorsay. Google keeps correcting to Orsay or D'orsay.

 

[poppysvintageclothing]

Dorsay was know for their loungewear, robes, etc. It looks late 60s or early 70s to me.

 

[StitchesandSnags]

"Small/medium/large" sizing became a thing in the 1960s. I agree with later 1960s - early 1970s.

 

[The Vintage Vendeuse]

Definitely reminds me of the "Flower Power" stickers/tshirts/etc that my sister and I loved in the late 1960s/early 1970s.
I do believe this is a one-piece pajama outfit.