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The Playtex 18 Hour Size Chart, Interactive

Playtex 18 Hour is plus-band workhorse engineering: B to DDD on 34 to 46 core, with the 18 Hour line itself stretching to a 50 band: one of the few mainstream charts that goes there.

The native chart

Every Playtex 18 Hour size: tap for conversions

18 Hour styles reach a 50 band; select styles offer G/H.

Two measurements in

Your size at Playtex 18 Hour

Same published math as the calculator (snug measure, no +4) then translated into Playtex 18 Hour’s native notation and checked against the real chart above, which lights up your cell.

Reading it

How Playtex 18 Hour sizing reads

Playtex 18 Hour’s chart reads band-then-cup in inches and US letters: the alphabet doubles after D (DD, DDD) before jumping to G. Your measured US size maps straight onto this chart with no letter translation.

From our brand dossier

How Playtex 18 Hour runs

BandBands run true to size: start with your measured band on the loosest hook.
CupCups grade generous: try your measured cup and one down.
Wire & strapsWires run wide: good for wide-root and shallow shapes; narrow roots may prefer another brand. Straps: Wide, cushioned.
Quirk 1Very wide bands; cups do not run as high: check the combination exists
Quirk 2Cups run generous
Quirk 3Wireless styles rely on band width for support: buy the measured band, not looser

Full fit notes, style guidance and comparisons live on the Playtex 18 Hour brand page.

Honest edges

Where this chart ends

For deep cups on those wide bands, Elomi (to UK K on bands to 48) is the specialist continuation. And if a symptom (riding band, gaping cup, poking wire) sent you size-hunting, the fix guides decode it before you spend anything.

Answered

Playtex 18 Hour sizing: answered

Does Playtex 18 Hour run true to size?

Band: Bands run true to size: start with your measured band on the loosest hook. Cup: Cups grade generous: try your measured cup and one down. In one line: cups grade generously: your measured letter may feel roomy; one down is worth a try.

What sizing system does Playtex 18 Hour use?

Native US sizing (it reads band-then-cup in inches and US letters) the alphabet doubles after D (DD, DDD) before jumping to G. Your measured US size maps straight onto this chart with no letter translation. The interactive chart above shows every size with its US, UK, EU and FR equivalents.

What sizes does Playtex 18 Hour carry?

34–46 bands with B–DDD cups in US notation. 35 sizes in the core chart. 18 Hour styles reach a 50 band; select styles offer G/H.

What if Playtex 18 Hour doesn't make my size?

For deep cups on those wide bands, Elomi (to UK K on bands to 48) is the specialist continuation. Sister sizes (same volume, different band) sometimes bridge a one-band gap: the calculator above tries them automatically before giving up.

Shop itAt HauteFlair, our sister retailer

Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.

Start from the measured size

Two measurements, no inches added, sister sizes attached.

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