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Brand comparison

Shock Absorber vs Berlei

Two brands, two ways of grading a size. Here is how Shock Absorber and Berlei differ in system, range and fit, and which one to choose for your shape and your problem.

UK sizing · Mid-marketShock Absorber
The high-impact sports bra brand graded in bra sizes, with UK cup letters: the benchmark for running support.
30–40 bands · A–HH (UK letters)

Full Shock Absorber guide →

VS
AU / NZ sizing · Mid-marketBerlei
Australia's reference for sports and everyday: AU sizing, UK cup letters, and one of the most-tested high-impact bras.
AU 8–24 (US 30–46) bands · A–H (UK letters)

Full Berlei guide →

Quick answer

Shock Absorber or Berlei, in short

Quick answer

Shock Absorber and Berlei use different systems (UK vs AU / NZ). Shock Absorber runs firm in the band and true in the cup with average wires; Berlei runs firm in the band, true in the cup, average wires. Range: Shock Absorber 30–40 / A–HH; Berlei AU 8–24 (US 30–46) / A–H. Convert your measured size into each and let fit decide.

Key differences· Sizing system: United Kingdom vs Australian· Bands: 30–40 vs AU 8–24 (US 30–46)· Cups: A–HH vs A–H· Band grading: firm vs firm· Cup grading: true vs true· Wire width: average vs average· Best known for: Ultimate Run vs Ultimate Performance
Your size

Your measured size in both

Measured size US 34CMeasure →
Shock Absorber · UK
34C

Berlei · AU / NZ
34C

Same body, two labels. Each result is your US size converted into the brand's system, then adjusted for how that brand grades. They use different systems, so the numbers differ even before fit.

Side by side

Shock Absorber vs Berlei at a glance

Shock AbsorberBerlei
Sizing systemUnited KingdomAustralian
Bands30–40AU 8–24 (US 30–46)
CupsA–HH (UK letters)A–H (UK letters)
Band gradingfirmfirm
Cup gradingtruetrue
Wire widthaverageaverage
StrapsWide, adjustable; racerback optionsWide on sport
Alpha sizesNoNo
TierMid-marketMid-market
OriginUKAustralia
Signature lineUltimate Run: high-impact, the flagshipUltimate Performance: high-impact sport
By shape

Which to try for your breast shape

ShapeShock AbsorberBerlei
Full on bottomUltimate RunBarely There demi
Full on topActive Multi SportsCurves
ShallowUltimate FlyBarely There
ProjectedActive Multi SportsLift & Shape
Wide-setActive Zipped PlungeUltimate Performance

Not sure of your shape? Use the shape finder.

Verdict

Choose Shock Absorber or Berlei?

Choose Shock Absorber if…
  • you want a firm, supportive band and are happy to size the band up if between
  • running and high-impact sport
  • full-bust sport in real sizes
Choose Berlei if…
  • you want a firm, supportive band and are happy to size the band up if between
  • high-impact sport
  • au sizing reference

Both are right at the same measurement. The label differs by system and the fit by grading: start from your measured size, convert into each, and let the five fit checks decide.

Key lines

What each brand is known for

Shock AbsorberBerlei
Line 1Ultimate Run: high-impact, the flagshipUltimate Performance: high-impact sport
Line 2Active Multi Sports: high-impact encapsulationBarely There: contour t-shirt
Line 3Active Zipped Plunge: front-zip high impactLift & Shape: full-figure underwire
Line 4Ultimate Fly: lighter, running-specificCurves: full cup
Answered

Shock Absorber vs Berlei: answered

Is Shock Absorber the same size as Berlei?

Different systems: Shock Absorber labels in UK, Berlei in AU / NZ. Shock Absorber: Bands run firm: if you sit between bands, take the larger band with the same cup volume (a sister size). Berlei: Bands run firm: if you sit between bands, take the larger band with the same cup volume (a sister size).

Which runs smaller, Shock Absorber or Berlei?

Shock Absorber. Cups grade true to the measured difference. Berlei. Cups grade true to the measured difference.

Which is better for a large bust, Shock Absorber or Berlei?

Shock Absorber runs to A–HH on bands 30–40; Berlei to A–H on AU 8–24 (US 30–46). The one whose range covers your size (in its own system) and whose wire width suits your root.

Which is better for a small bust?

Whichever grades true or small at A–C: Shock Absorber cups true, Berlei cups true. Small bands need the brand whose range starts lower: 30 vs AU 8.

Can I use my Shock Absorber size at Berlei?

Convert first (UK → AU / NZ), then adjust: Berlei bands run firm and cups true relative to true. The calculator above does both.

Do Shock Absorber and Berlei fit the same breast shapes?

Not identically. Full on bottom: Shock Absorber Ultimate Run vs Berlei Barely There demi; Full on top: Shock Absorber Active Multi Sports vs Berlei Curves; Shallow: Shock Absorber Ultimate Fly vs Berlei Barely There.

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