JUST MEN’S THONGS

Our Sizing

Find your waist size, see what comes standard, and learn how to adjust the fit of your next pair.

THE STARTING POINT

Start with your usual size.

Choose the underwear size you usually wear. If you normally wear Large, start with Large.

Our fabrics have plenty of stretch. If your current size fits comfortably, there’s no need to change it.

Unsure which size to choose? Ask us before you order.

FOUR FRONT CUTS

Choose your pouch coverage.

From Classic to Tear Drop, the front coverage gets narrower. The standard pouch depth stays the same for your size.

  • Classic front cut: broad gold pouch with the fullest coverage at the sides.

    Classic

    Our fullest front coverage, with the widest shape through the sides of the pouch.

  • Slim front cut: gold pouch with narrower side coverage than Classic.

    Slim

    Less fabric at the sides than Classic, giving the front a narrower outline.

  • Tower front cut: gold pouch with a narrower upper section and rounded lower shape.

    Tower

    The upper sides taper in more than Slim, while the lower pouch stays rounded.

  • Tear Drop front cut: gold pouch with a very narrow upper-middle section and a rounded teardrop base.

    Tear Drop

    Our least front coverage. The sides curve close to the center seam above a rounded lower pouch.

What changes

The amount of fabric at the sides of the pouch and the curve of the leg openings.

What stays the same

The standard pouch depth for your size. All four cuts join the side straps at the same point along the upper edge.

Want more or less room inside the pouch? That’s a separate pouch-depth adjustment.

Illustrations show the differences in coverage. They are not to scale or exact cutting patterns.

THREE BACK CUTS

Choose your back coverage.

Choose your back separately from your pouch. Each style gives you a different amount of coverage at the top of the back.

  • Original back cut: small gold upper triangle tapering into a narrow center strap.

    Original

    Our least back coverage. A small triangle at the top tapers into a narrow center strap.

  • Larger Triangle Back cut: wider and deeper gold upper triangle with a narrow strap below.

    Larger Triangle Back

    A wider, deeper triangle adds coverage at the top, with a narrow strap below.

  • Full Thong Back cut: broad gold upper panel narrowing into the center thong strap.

    Full Thong Back

    Our most back coverage. The broad upper panel narrows into a thong strap below.

What changes

The width and shape of the fabric at the top of the back, and how far that coverage extends down.

What stays the same

The standard back-strap length for your size. Your waist size and pouch choice are separate selections.

Need the strap longer or shorter? See back-strap adjustments.

Illustrations show the differences in coverage. They are not to scale or exact cutting patterns.

Angled thong illustration with a gold pouch. An outer contour around its lower edge shows added room outward and downward, with the waistband and straps unchanged.
Standard pouch Added room Illustration only. The outline shows where room is added—not the exact size of an adjustment.

ROOM IN FRONT

Pouch depth

The pouch has a standard depth for your waist size. If you’ve tried that fit and want more or less room, you can adjust the depth without changing your waist size or pouch style.

S–2XL
Standard pouch
3XL–7XL
Larger standard pouch
  • +1 or +2 inchesAdds depth for more room.
  • −1 or −2 inchesReduces depth for less room.
  • No adjustmentKeeps the standard pouch for your size.

An adjustment is relative to your size’s standard pouch—not an absolute measurement of the finished pouch.

The central back strap of an illustrated thong highlighted in gold.
Back strap highlighted. Illustration, not to scale.

LENGTH AT THE BACK

Back-strap length

The strap running down the center of the back has a standard length for your size. We measure it from where it attaches to the pouch to the very top of the back, before attaching the elastic.

Standard back-strap lengths before elastic is attached
Waist sizeInchesCentimetres
S9½24.1
M–XL10½26.7
2XL–4XL11½29.2
5XL–7XL12½31.8

+1 or +2 inches makes the strap longer.
−1 or −2 inches makes it shorter.

The elastic compresses the strap slightly so it hugs your body. The finished strap will therefore be a little shorter than the pre-elastic measurements above.

These are garment construction measurements, not body measurements. You can adjust the length without changing your selected back style. If you aren’t sure what to change, ask us before ordering.

A few things worth knowing.

Should I adjust my first pair?

If this is your first pair, we recommend no adjustments. If you’ve ordered before and would like help with the fit, email support@justmensthongs.com with your previous order number. We’ll help you decide what to change.

Do the different pouch styles change the depth?

No. Classic, Slim, Tower, and Tear Drop change the front coverage. They use the same standard pouch depth within a given waist size. Choose a depth adjustment separately if you need more or less room.

Can I change one area without changing the other?

Yes. Pouch depth and back-strap length are separate options. Keep the area that fits you as it is, and adjust only the area you want to change. Neither adjustment changes your selected waist size.

Where do I choose an adjustment?

Open Optional adjustments when choosing your fit. Select the pouch-depth or back-strap change before adding the pair to your cart. “No adjustment” keeps the standard fit for the waist size you selected.

What if I’m not sure what to change?

Email support@justmensthongs.com with your order number. We’ll look up your pair and help you decide what to adjust.