Size Guide

Polish lingerie brands size bras in centimeters, with bands from 65 to 115 and cups from A to M. This guide turns what you already know — a US size, a UK size, or two tape measurements — into that system, and shows the manufacturer charts behind the math.

The UK option follows the same convention as the A Bra That Fits calculator — an ABTF result like 34FF can be entered here as it is. US letters past DDD vary by brand: if your label says E or F, pick DD (E) or DDD (F).

 
 
1. Underbust. Wrap the tape directly under the bust, exhale, and pull it snug. A firm reading here is what lets the band do the supporting work.
2. Bust. Measure around the fullest point while standing relaxed, in a soft unpadded bra, keeping the tape level and loose enough not to press into the tissue.

Manufacturer charts assume these two readings measured this way. Write both numbers down and enter them in the tape calculator.

How US and UK bra sizes convert to European

Band numbers convert cleanly: US or UK 30 is EU 65, and every band step of 2 adds 5 on the EU scale. Cup letters match through D. Past D the systems part ways — the US keeps counting with DD and DDD before returning to single letters, while the UK doubles letters along the way, so a UK FF and a US H both land on a European H. The maps below are the official conversions published by Mediolano and Mefemi.

EU band 65 70 75 80 85 90 95 100 105 110 115
US / UK band 30 32 34 36 38 40 42 44 46 48 50
FR band 80 85 90 95 100 105 110 115 120 125 130
EU cup A B C D E F G H I J K L M
UK cup A B C D DD E F FF G GG H HH —
US cup A B C D DD DDD G H I J — — —

European cups above L and US cups above J have no agreed letter equivalent — for those sizes, measuring is the reliable route.

The Polish bra size chart in centimeters

Gorsenia, Mediolano, Mefemi and Ysabel Mora define sizes on one measurement grid: each band covers a 5 cm range of underbust values, and each cup step adds 2 cm of bust circumference. Find your underbust row first, then read across to the range that contains your bust measurement.

EU size US / UK band Underbust cm A B C D E F G H I J K L M
65 30 63–67 77–79 79–81 81–83 83–85 85–87 87–89 89–91 91–93 93–95 95–97 97–99 99–101 101–103
70 32 68–72 82–84 84–86 86–88 88–90 90–92 92–94 94–96 96–98 98–100 100–102 102–104 104–106 106–108
75 34 73–77 87–89 89–91 91–93 93–95 95–97 97–99 99–101 101–103 103–105 105–107 107–109 109–111 111–113
80 36 78–82 92–94 94–96 96–98 98–100 100–102 102–104 104–106 106–108 108–110 110–112 112–114 114–116 116–118
85 38 83–87 97–99 99–101 101–103 103–105 105–107 107–109 109–111 111–113 113–115 115–117 117–119 119–121 121–123
90 40 88–92 102–104 104–106 106–108 108–110 110–112 112–114 114–116 116–118 118–120 120–122 122–124 124–126 126–128
95 42 93–97 107–109 109–111 111–113 113–115 115–117 117–119 119–121 121–123 123–125 125–127 127–129 129–131 131–133
100 44 98–102 112–114 114–116 116–118 118–120 120–122 122–124 124–126 126–128 128–130 130–132 132–134 134–136 136–138
105 46 103–107 117–119 119–121 121–123 123–125 125–127 127–129 129–131 131–133 133–135 135–137 137–139 139–141 141–143
110 48 108–112 122–124 124–126 126–128 128–130 130–132 132–134 134–136 136–138 138–140 140–142 142–144 144–146 146–148
115 50 113–117 127–129 129–131 131–133 133–135 135–137 137–139 139–141 141–143 143–145 145–147 147–149 149–151 151–153

This chart describes how the sizes are defined, not what is on the shelf. Published ranges also differ by brand: Gorsenia’s chart spans the full grid, Mefemi publishes bands 65–110 with cups A–K, Mediolano trims the corners — its cup A ends after band 85 and its deepest cups appear around bands 75–80 — and Ysabel Mora publishes a compact window of bands 65–110 with cups B–F. The size filter in the bras catalog shows what is in stock right now.

Source: Gorsenia, Mediolano, Mefemi and Ysabel Mora manufacturer size charts, August 2026.

Sister sizes

Sizes that sit one step apart diagonally hold a similar cup volume: 70G, 75F and 80E are one family. Sister sizes answer a band problem while the cup volume is right — if a bra fits in the cup but grips the ribcage, the neighbor with the larger band and the smaller cup letter is the next thing to try. The calculator lists both neighbors with every result, and the try-on notes below cover the other directions.

Reading the first try-on

A well-sized bra sits level around the body, fastens comfortably on the loosest hook while new, and carries the weight in the band rather than the straps. When something is off, the symptom points at the fix.

The band rides up in the back — it is too loose, so move toward the sister size with the smaller band. The band grips while the cups sit well — sister size with the larger band. The breast spills over the edge or presses out at the sides — larger cup on the same band. The cup wrinkles or gapes at the top — smaller cup on the same band, or a different cut. The center panel stands away from the breastbone in a wired style — usually a cup-depth question, so try the larger cup before changing the band.

Panty sizes by hip measurement

Panties across our brands are sized by hip circumference, and each brand cuts its ranges differently — the same 104 cm hip is an XL at Gorsenia and still an L at Mefemi. Measure around the fullest part of the hips and check your brand below, or let the converter do it.

 

Gorsenia

Size Hips cm
S / 36 90–94
M / 38 94–98
L / 40 98–102
XL / 42 102–106
2XL / 44 106–110
3XL / 46 110–114
4XL / 48 114–118
5XL / 50 118–122

Mediolano

Size Hips cm
S / 36 89–94
M / 38 95–100
L / 40 101–106
XL / 42 107–113
2XL / 44 114–120
3XL / 46 121–128

Mefemi

Size Hips cm
XS 88–92
S 92–96
M 96–100
L 100–104
XL 104–110
2XL 110–116
3XL 116–122
4XL 122–128

Sloggi

Size Hips cm
XS / EU 32–34 82–89
S / EU 36–38 90–98
M / EU 40–42 99–108
L / EU 44–46 109–118
XL / EU 48–50 119–128
XXL / EU 52–54 129–138
XXXL / EU 56–58 139–148

Ysabel Mora

Size Hips cm
XS 80–88
S 88–96
M 96–104
L 104–112
XL 112–120
XXL 120–136
3XL 128–136

Cotonella

Size Hips cm
XS 88–93
S 93–98
M 98–103
L 103–108
XL 108–113
2XL 113–118
3XL 118–123

A value on the shared edge of two ranges means both sizes are worth trying — the tables above keep each brand’s own boundaries. Browse the panties catalog with your sizes at hand.

Source: manufacturer size charts, August 2026.

Brands sized in letters

Two of our brands step outside the band-and-cup system. Sloggi bras carry letter sizes, and the two Zero Feel lines map band and cup to letters differently — a 34C is an M in Zero Feel 2.0 and an S in the original Zero Feel, so check the line before choosing. Obsessive sizes its lingerie in dual letter sizes built on four body measurements.

Sloggi Zero Feel 2.0

Cup 30 / EU 65 32 / EU 70 34 / EU 75 36 / EU 80 38 / EU 85 40 / EU 90 42 / EU 95
A — XS S M L XL XXL
B XS XS S M L XL XXL
C XS S M L XL XXL —
D XS+ XS+ S+ M+ L+ XL+ —
DD (E) XS+ S+ M+ L+ XL+ XL+ —

Sloggi Zero Feel

Cup 30 / EU 65 32 / EU 70 34 / EU 75 36 / EU 80 38 / EU 85 40 / EU 90
A XS XS S S M L
B XS XS S M L XL
C XS S S M L XL
D XS S M M L XL
E S S M L XL XL

Obsessive lingerie and sets

  XS/S S/M M/L L/XL XL/2XL 2XL/3XL
Bust cm 80–89 85–94 90–99 95–104 100–109 105–114
Underbust cm 67–73 69–77 74–80 78–86 81–90 87–95
Waist cm 64–73 68–77 74–83 78–87 84–93 88–99
Hips cm 84–94 90–100 95–105 101–111 106–116 112–122

Obsessive knitted pieces — bodystockings and hosiery

  S/M/L XL/XXL
Bust cm 80–99 100–109
Underbust cm 67–80 81–90
Hips cm 84–105 106–116

Source: Sloggi and Obsessive manufacturer charts, August 2026.

Where to go from here

With a starting size and its two sisters written down, the rest is browsing: the bras catalog filters by size, and matching panties follow the hip tables above. If a delivered bra misses on one of the try-on signs, the symptom map above points at the exchange to make.