The chlorine-free Seventh Generation Pantiliners ($8 for 100) are advertised as having a flexible design that conforms to the body to prevent leaks. However, these only have a light absorbency level, so if your period is heavy, you might want to wear another period-care product, like a menstrual cup or a tampon, in addition to these liners.
Many reviews praise these liners for being lightweight, soft, comfortable, and non-irritating. Another common opinion is that they are on the shorter side compared to other liners.
Since they're not individually wrapped, they may not be the best option for tossing in a handbag alongside your keys and wallet — unless you have a clean pouch you can dedicate to menstrual care products.