Speedo Global Fit Junior Girls 4yrs-16yrs Size Guide

This size guide covers Speedo Global Fit junior girls' swimwear in numeric sizes 22–34 (equivalent to ages 4–16 years). All measurements are body measurements taken from your child's body, not garment measurements. Always use the chest/bust measurement as the primary guide. International size equivalents (D, F, I, Lat Am, Aus, USA, CAN, MEX) are included in the sizing table below.

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Body Measurement Points
Speedo junior girls' swimwear body measurement diagram
How to Measure

Take all measurements directly against your child's skin using a soft tape measure. All measurements are body measurements, not garment measurements.

  • A
    Chest / BustMeasure around the fullest part of the chest, keeping the tape horizontal and snug but not tight.
  • B
    WaistMeasure around the waist 5cm below the natural waist at the narrowest point.
  • C
    HipMeasure around the widest part of the hips, 10cm below the natural waist.

*Waist is measured 5cm below the natural waist. **Hips are measured 10cm below the natural waist around the widest point.

Sizing Table — Speedo Global Fit Junior Girls' Swimwear (Ages 4–16 / Sizes 22–34)
Sizing 4yrs / 22 6yrs / 24 8yrs / 26 10yrs / 28 12yrs / 30 14yrs / 32 16yrs / 34
International Size Equivalents
GB Age / Size 4yrs / 22 6yrs / 24 8yrs / 26 10yrs / 28 12yrs / 30 14yrs / 32 16yrs / 34
D (Germany) — Height 104cm 116cm 128cm 140cm 152cm 164cm 176cm
F (France) 4 ans 5–6 ans 7–8 ans 9–10 ans 11–12 ans 13–14 ans 15–16 ans
I (Italy) 4 anni 5–6 anni 7–8 anni 9–10 anni 11–12 anni 13–14 anni 15–16 anni
Lat Am Talla 22 Talla 24 Talla 26 Talla 28 Talla 30 Talla 32 Talla 34
Aus Girl 2 Girl 4 Girl 6 Girl 8 Girl 10 Girl 12 Girl 14
USA 4 6 8 10 12 14 16
CAN 4 6 8 10 12 14 16
MEX 4 6 8 10 12 14 16
Body Measurements (cm)
Chest / Bust 52–56 57–61 62–66 67–73 74–79 80–85 86–91
Waist* 52–53 54–56 57–60 61–64 65–68 69–71 72–75
Hip** 55–59 60–64 65–70 71–76 77–84 85–90 91–97

*Waist is measured 5cm below the natural waist at the narrowest point. **Hips are measured 10cm below the natural waist around the widest point. All measurements are body measurements, not garment measurements.

Fit Notes — Speedo Global Fit Junior Girls' Swimwear
  • Always use the chest/bust measurement as the primary guide when selecting a Speedo junior girls' swimsuit size.
  • Age is shown as a guide only — children grow at different rates, so always measure and compare to the size table rather than selecting by age alone.
  • If chest and hip measurements suggest different sizes, choose the size that fits the chest. The chest is the hardest area to adjust in a one-piece swimsuit.
  • Speedo junior swimsuits are designed to fit closely and securely — they feel firmer than a regular fitted top, which ensures the suit stays in place during swimming.
  • Speedo swimsuits are made from chlorine-resistant fabrics that ease slightly with wear — do not size up based on initial tightness.
  • The swimsuit should feel secure across the chest and back with no gaping, pulling, or riding up.
  • Rinse in cold fresh water immediately after every use. Do not tumble dry, iron, or dry-clean.
  • Unsure? Contact our team or call +44 1827 330600.
Frequently Asked Questions — Speedo Junior Girls' Swimwear

Measure your child's chest, waist, and hips against their skin with a soft tape measure. Use the chest as the primary guide and compare to the sizing table above. Age is shown as a guide only — always use body measurements to confirm the right size, as children grow at different rates.

We recommend sizing to your child's current measurements rather than sizing up for growth. A swimsuit that is too large will not stay in place during swimming and may cause discomfort. Speedo's chlorine-resistant fabrics feel firm when new and ease slightly with regular use — a well-fitted suit will still feel comfortable after a few sessions.

Use the chest measurement to decide. If the chest falls between two sizes, choose the larger size. If the chest and hip measurements suggest different sizes, prioritise the chest — it is the hardest area to adjust in a one-piece swimsuit. Speak to a member of staff at Allens if you are unsure.

Yes. Speedo junior swimsuits are designed for regular pool use and are made from chlorine-resistant fabric suited to frequent swimming lessons and training sessions. For competitive swimming, Speedo also offer junior racing suits — speak to a member of staff at Allens for guidance on the right product for your child's level.

Speedo junior swimsuit sizes do not directly correspond to standard clothing or school uniform sizes. Always use body measurements to select the correct size. The age equivalents shown in the table are a secondary guide only — a child who wears age 10 in school clothing may need a different size in Speedo swimwear depending on their measurements.

Speedo junior swimsuits are designed primarily for pool use. While the chlorine-resistant fabrics will withstand occasional use in open water or the sea, prolonged exposure to salt water can accelerate fabric wear. Always rinse the suit thoroughly in fresh water after every use, whether in a pool, the sea, or open water.

Rinse in cold fresh water immediately after every use to remove chlorine, salt, and sunscreen. Hand wash gently with a mild detergent if needed. Do not machine wash, tumble dry, iron, or dry-clean. Store flat and dry, away from direct sunlight. Avoid sitting on rough pool surrounds in the swimsuit as this can cause premature fabric wear.