Sizing
Knix tends to run small (many people size up); Ruby Love runs true to size. Both brands size from your hip measurement, so rather than converting one brand's size into the other's, the size finder gives you your size in each directly.
Knix: Brand labels core styles "True to Size" on product pages (e.g. Essential High Rise). However, customer reviews consistently report the leakproof styles run small / recommend sizing
Ruby Love: Ambiguous in brand materials. The sizing guide and FAQ say buy "True to size for best fit" and that underwear "should fit comfortably snug for maximum leak-proof performance." Howe
Quick answers
- Is Knix or Ruby Love more absorbent?
- By their own published claims, Knix reaches a higher maximum capacity (up to 99 mL) than Ruby Love (up to 12.5 mL) at its highest current tier. That does not make every Knix pair more absorbent than every Ruby Love pair - it means the top of Knix's range is higher. Compare tier by tier in millilitres, not by the label words. And remember these are saline-lab maximums, not leak-free guarantees - the only blood-component study measured far lower real capacity.
- Do Knix and Ruby Love use the same absorbency labels?
- No. Knix publishes 4 current tiers (15–99 mL across the range) and Ruby Love publishes 1 (12.5 mL). Even where the words overlap, the millilitres differ, which is exactly why this page compares them in millilitres with a data-quality grade on every number.
- How do Knix and Ruby Love sizes compare?
- Knix tends to run small (many people size up); Ruby Love runs true to size. Both size from your hip measurement, so the size finder gives your size in each brand directly rather than guessing from the other brand's number.
Skip the comparison - get your answer
Tell the translator your flow and it gives the covering tier at both Knix and Ruby Love. Tell the size finder your hip and it gives your size in each.