Quick answer

Choose the Side Seamfree Period Bikini if you prefer a lower-rise cut and have a medium flow. Opt for the Side Seamfree Period Full Brief if you want full tummy coverage and a secure fit for heavier days.

Coverage and fit differences

The Full Brief features a traditional high-waisted design that sits over the tummy, providing a soft, secure feeling and full bum coverage. This makes it ideal for those who prefer extra coverage and a stay-put fit, especially during sleep or high-activity days.

In contrast, the Bikini Brief sits lower on the hips, offering a more modern, less bulky silhouette. It's a great choice if you want period protection that feels closer to your everyday underwear, especially under fitted clothing.

Absorbency and intended flow

The Side Seamfree Period Bikini Brief is designed for medium+ flow, absorbing 15-20ml (3-4 regular tampons). This makes it suitable for moderate days or as a backup with a cup or disc.

The Full Brief does not specify a milliliter capacity in the catalog facts, but its design with full coverage and a seamless knit suggests it can handle a similar or potentially higher absorbency, offering more security for heavier flow or overnight use.

Trade-offs at a glance

  • Bikini: lower profile, less coverage: The Side Seamfree Bikini sits lower on the hips, which is great for avoiding visible lines under leggings or skinny jeans. However, it provides less tummy coverage and may feel less secure for overnight use.
  • Full Brief: full coverage, secure fit: The high-waisted Full Brief covers the tummy and provides full bum coverage, minimizing the chance of leaks or riding up. The trade-off is a more traditional silhouette that may not be as discreet under tight clothing.
  • Absorbency: bikini has a stated capacity: The Bikini explicitly absorbs 15-20ml, which helps you plan for medium flow days. The Full Brief's absorbency is not specified in the catalog, so if you need a precise milliliter capacity, the Bikini gives you that data. If you rely on exact absorbency numbers, the Bikini offers a clear specification.

Product facts

  • Side Seamfree Period Full Brief: Made with seamless knitting technology, elastic leg binding to prevent riding up, and a traditional high-waisted design for full tummy coverage. This provides a secure, non-slip fit and full coverage, making it a reliable choice for heavier flow days or when you want extra tummy support.

    Side Seamfree Period Full Brief

    Side Seamfree Period Full Brief

  • Side Seamfree Period Bikini Brief: Medium+ flow absorbs 15-20ml (3-4 regular tampons). Features seamless knitting and elastic leg binding. The stated absorbency makes it ideal for moderate flow days, and the bikini cut offers a lower-profile fit that works well under everyday clothing.

    Side Seamfree Period Bikini Brief

    Side Seamfree Period Bikini Brief

Which style fits your flow and lifestyle?

Best for

  • Medium flow days and active wear (Bikini)
  • Full coverage and overnight security (Full Brief)

Not ideal for

  • Those who need a very high absorbency without a stated capacity (consider the Full Brief if you prioritize coverage over a number)
  • Those who prefer a completely invisible panty line under tight clothing (the Full Brief's high waist may show)