Comfort fit: Rounded interior slides on easily and feels less tight. Best for daily wear bands.
Standard fit: Flat interior. Traditional, costs less.
Flat bands: Modern, geometric look. Can feel less comfortable than curved profiles.
Domed/Court: Curved exterior, comfortable interior. Classic shape.
Knife edge: Pointed profile creates dramatic shadow lines. Stylish but can feel sharp.
For rings you'll wear constantly, comfort fit is worth the small premium.