Quick answer

Start with the size you normally wear in underwear, then choose the cut based on coverage: Protection Bikinis for a low-coverage fit and Protection Shorties for high coverage. Do not size down for a tighter feel; the latex is already stretchy and single-use, so a smaller size mainly adds pressure at the waist and legs. If you are between sizes, pick the larger one for comfort.

Why your usual underwear size is the right starting point

Lorals Protection styles are designed to fit like your favorite lingerie, so the most reliable reference is the size you already wear in everyday underwear. The material is super-stretchy, which means it accommodates normal body variation without needing a separate sizing system. Sizing down does not improve protection; it only changes how the waistband and leg openings press against your skin. If your usual size sits comfortably without digging in, that is the size to order.

Match the cut to the coverage you actually want

Bikini and shortie styles differ in coverage, not in sizing logic. The bikini is low-coverage and sits like a classic brief, while the shortie extends higher for more coverage across the hips and rear. Choose the cut first, then apply your usual size to that cut. If you have never worn either shape, think about which underwear you reach for on a normal day and use that as your guide. The sheer finish is part of both styles and does not change the fit.

What to check when the fit feels off

A correct fit stays in place without rolling at the waist or pulling at the leg openings. If the waistband rolls down, the piece may be too small or sitting too low for your torso; try adjusting the rise before assuming you need a different size. If the leg openings dig in, that is usually a sign to go up rather than down. Because these are single-use items, check the fit over clean, dry skin before any activity so you are not guessing mid-use.

Pack size and quantity decisions

Protection Bikinis and Protection Shorties are sold as single items with a quantity option, while the Protection Shorties 4-Pack bundles four pieces. If you are trying a style for the first time, order one to confirm the fit before committing to a pack. If you already know your size and cut, the 4-pack reduces the need to reorder and keeps a spare on hand. The Pleasure Bikinis 4-Pack is a separate line for sensation play without STI protection, so do not substitute it when you need the Protection line.

Decision rules for choosing your size

  • You are between two sizes: Choose the larger size. The latex stretches, and a slightly roomier fit is less likely to roll or dig at the waist and legs. Comfort first; protection does not depend on a tight fit.
  • You want low coverage: Pick Protection Bikinis in Sheer in your usual underwear size. The low-coverage cut is designed to fit like lingerie. Bikini for a lighter, brief-like feel.
  • You want high coverage: Pick Protection Shorties in Sheer in your usual underwear size, or the 4-pack if you already know the fit. Shortie for more coverage across hips and rear.
  • You are buying for the first time: Order one piece to test the fit over clean, dry skin before choosing a pack. Confirm size, then scale up to a pack.
  • You need STI protection: Stay with the Protection line. Pleasure Bikinis are for sensation play and are not for STI protection. Do not substitute the Pleasure line when protection is the goal.

Product facts that affect sizing

  • Protection Bikinis in Sheer: Protection Bikinis in Sheer are a low-coverage sheer style that fits like lingerie and is FDA-cleared for blocking bodily fluids and STIs/STDs during cunnilingus and rimming. The bikini cut sits lower and covers less, so your usual size gives a closer, lingerie-like fit without needing to size down.
  • Protection Shorties in Sheer: Protection Shorties in Sheer are a high-coverage sheer style with the same ultra-thin, silky-smooth, FDA-cleared latex construction. If you want more coverage across the hips and rear, the shortie is the cut to size in your usual underwear size.
  • Protection Shorties in Sheer (4-Pack): Protection Shorties in Sheer are also available as a 4-pack. Once you confirm your size in a single shortie, the 4-pack is the practical repeat purchase for regular use.

Who each cut and sizing approach suits

Best for

  • Shoppers who already know their usual underwear size and want a straightforward starting point
  • People choosing between low-coverage bikinis and high-coverage shorties for protected oral sex
  • First-time buyers who want to test one piece before committing to a 4-pack

Not for

  • Anyone looking for a reusable latex garment; these are single-use
  • Shoppers who need STI protection from the Pleasure line, which is not designed for that
  • People who prefer to size down for a tighter feel; start with your usual size instead