Sunenlyst Pattern Sewing Rulers Set, 4 Styles Plastic Sew French Curve Ruler, Metric Curve Shaped Rulers for Designers and Tailors, Perfect for Drawing, Craft, Sewing Project and DIY by

I'm just starting to draft my own patterns and I ordered these curves to help me along the way. They aren't big fancy ones, but they're relatively sturdy, and they get the job done. They're very flexible, and not terribly thick, but they are good enough for their purpose. I find them extremely useful. The markings are tiny but readable.

On the thin side & bend easily but they do what are supposed to do if on a solid surface.

Essential for creating consistent curves while drafting patterns. The plastic is not too thick. It's flexible, but seems durable enough for extended use. Good size for most pattern making, but a larger size may be helpful for skirts or trousers. All in all, very happy with this purchase.

Great tool to have when designing clothes

Works fine, but very flimsy.