Q: Will these fit well for someone who is plus sized? I’m concerned about them fitting properly as far as calf circumference...

The calf circumference on a size 7 is 34cm. The circumference increments by 1.17cm for each size up or down. So, a size 6 would measure 32.8cm and a size 8 would measure 35.17cm. By adding up or down you should be able to get the circumference for your size.