Speedo Global Fit Adult Male Swim 26-46 Size Guide

This size guide covers Speedo Global Fit adult men's swimwear in numeric sizes 26–46. All measurements are body measurements taken from your own body, not garment measurements. Always use the waist and hip measurements as the primary guide. International size equivalents (D, F, I, Lat Am, Aus, USA, CAN, MEX) are included in the sizing table below.

Shop Speedo Men's Swimwear →
Body Measurement Points
Speedo men's swimwear body measurement diagram
How to Measure

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

  • A
    HipMeasure around the widest part of your hips, 10cm below the natural waist. This is the primary measurement for men's swimwear.
  • B
    WaistMeasure around your waist 5cm below the natural waist at the narrowest point.

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

Sizing Table — Speedo Global Fit Adult Male Swimwear (Sizes 26–46)
Sizing 26 28 30 32 34 36 38 40 42 44 46
International Size Equivalents
GB Size 26 28 30 32 34 36 38 40 42 44 46
D (Germany) 1 2 3 4 5 6 7 8 9 10 11
F (France) 34 36 38 40 42 44 46 48 50 52 54
I (Italy) 40 42 44 46 48 50 52 54 56 58 60
Lat Am Talla 26 Talla 28 Talla 30 Talla 32 Talla 34 Talla 36 Talla 38 Talla 40 Talla 42 Talla 44 Talla 46
Aus 6 8 10 12 14 16 18 20 22 24 26
USA 26 28 30 32 34 36 38 40 42 44 46
CAN 26 28 30 32 34 36 38 40 42 44 46
MEX 26 28 30 32 34 36 38 40 42 44 46
Body Measurements (cm)
Hip* 80–85 86–92 93–97 98–102 103–106 107–111 112–116 117–121 122–126 127–131 132–136
Waist** 63–68 69–74 75–79 80–84 85–88 89–93 94–98 99–103 104–108 109–113 114–118

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

Fit Notes — Speedo Global Fit Adult Men's Swimwear
  • Always use your waist and hip measurements as the primary guide when selecting a Speedo men's swimwear size. Both should fall within the same size — if they suggest different sizes, use the hip measurement to decide.
  • Speedo men's swimwear is designed to fit closely and securely — trunks and jammers should sit flat against the body with no gaping at the waistband or leg.
  • Most Speedo men's styles feature an internal drawcord at the waist, which allows adjustment for a more comfortable fit around the waist.
  • Speedo swimwear is made from chlorine-resistant fabrics that ease slightly with wear — do not size up based on initial tightness.
  • 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 Adult Men's Swimwear

Measure your waist and hips against your skin with a soft tape measure. Use both measurements as your primary guide and compare to the sizing table above.

If your waist and hip measurements fall between two sizes, use the hip measurement to decide. Most Speedo men's styles feature an internal drawcord which allows the waist to be adjusted, so a slightly larger size can be taken in at the waist if needed. Speak to a member of staff at Allens if you are unsure.

Trunks are a mid-length style similar to shorts, sitting above the knee. Jammers are a longer, close-fitting style extending to the knee, popular with competitive and fitness swimmers for their hydrodynamic profile. Briefs are a minimal, close-fitting style offering the least resistance in the water. All are sized using the same waist and hip measurements.

Speedo men's swimwear sizes do not directly correspond to standard clothing sizes. Always use body measurements to select the correct size. The international equivalents shown in the table are a secondary reference only — body measurements should always be the primary guide.

Standard Speedo swimwear is suitable for recreational and fitness swimming. For competitive pool swimming, Speedo's Fastskin racing range (including the LZR Pure Intent 2, LZR Pure Valor 2, and LZR Ignite) are specifically designed and World Aquatics approved. Speak to a member of staff at Allens for guidance on the right product for your level.

Speedo swimwear is primarily designed 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. Rinse thoroughly in fresh water after every use. For dedicated open water or triathlon use, a wetsuit or open water-specific suit is recommended.

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 as this can cause premature fabric wear.