Vintage High Waisted Flare Jeans, 1970s High Rise Denim with Bell Bottom Legs Size 30 or 31 (10-12, M-L)
Fun vintage jeans are a great silhouette, and are a bit more forgiving than traditional denim. These "generic" vintage jeans have no branding, so they likely came from a lower end store at the time. The fabric is denim but a bit thinner and softer than traditional cotton denim - so maybe a cotton polyester blend? No stretch, but not as stiff as regular denim.
These have a high rise and flare out below the knee. True 1970s style! No condition issues, and comfy to wear. The pockets are even a respectable depth!
There is no size tag, no brand, and no fiber content - just wash instructions.
These measure like a 31 or 12, but because there is no stretch, may be more comfortable on a size 30 or 10. Depends on how comfortable you are with "tight" jeans (again, with no stretch). Model is 5'11" tall and wears a size 8 or 29 jean.
For best fit, please compare the measurements below to your own, or to the size chart of a brand that fits you well.

Waist: 31"
Rise: 12"
Hips: 42"
Inseam: 31. 5"
Thigh: about 21" around

This item is sold from a vintage boutique in New Jersey.