Walls Insulated Jumper - Unisex / Vintage

Walls insulated unisex jumpsuit in a royal navy. Incredibly kept & quality. I don’t see a size listed. By my best guess, Men’s M // Women’s L I’m 5’2” — sadly too tall for me, even belted. My partner is 6’1” and just too short for him. Best for someone between 5’6” to 5’10”