Speedo Fastskin LZR Pure Intent 2 Jammer Size Guide

This size guide covers the Speedo Fastskin LZR Pure Intent 2 Jammer — a World Aquatics approved men's competition racing jammer engineered specifically for sprinters. The flagship suit of Speedo's elite Fastskin LZR range, the Pure Intent 2 is built for swimmers who demand maximum compression and explosive performance in every race. Featuring Lamoral® Space Tech coating for long-lasting water repellency, compressive dual layers for optimal muscle support, textured fabric zones targeting drag reduction, and triple fabric construction with bonded ergonomic seams to connect key muscle groups for greater power return. The Band Technology is specifically engineered to support a powerful leg kick — making the Pure Intent 2 the suit of choice for sprint freestyle, butterfly, backstroke, and breaststroke competitors at club, county, national, and international level. All measurements are body measurements taken from your own body, not garment measurements.

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Body Measurement Points
Speedo Fastskin LZR Pure Intent 2 Jammer body measurement points — hip and waist diagram for men
How to Measure

To find your correct Speedo Fastskin LZR Pure Intent 2 Jammer size, use a soft measuring tape and take measurements directly against your skin. If you fall between two sizes, size down for maximum sprint compression, or size up for easier donning. Always use your hip measurement as the primary guide.

  • A
    Hip Measure around the fullest, widest part of your hips and seat, keeping the tape horizontal.
  • B
    Waist Measure 6cm below the narrowest part of your natural waist, keeping the tape level all the way around.

Note: The Fastskin LZR Pure Intent 2 is Speedo's highest compression racing jammer. It will feel significantly tighter than a training suit or the LZR Pure Valor 2 — this is intentional and essential to the suit's sprint performance.

Sizing Table — Men's Fastskin LZR Pure Intent 2 Jammer
Size 18 Size 20 Size 22 Size 23 Size 24 Size 25 Size 26 Size 28 Size 30
Body Measurements
Hip cm 80.0–84.0 84.0–88.0 88.0–92.0 92.0–95.0 95.0–99.0 99.0–102.0 102.0–106.5 106.5–111.0 111.0–117.0
Waist cm 61.0–67.0 67.0–73.0 73.0–77.0 77.0–80.0 80.0–84.0 84.0–87.0 87.0–91.5 91.5–96.0 96.0–102.0

* Size 18 is only available in Regular Waist. All measurements are body measurements, not garment measurements.

Fit Notes — Speedo Fastskin LZR Pure Intent 2 Jammer
  • The Speedo Fastskin LZR Pure Intent 2 Jammer is Speedo's highest compression racing jammer and will feel significantly tighter than a training suit or the LZR Pure Valor 2. This is intentional — the compression is core to its sprint performance.
  • If your hip and waist measurements fall into different size brackets, use your hip measurement as the primary guide, as the jammer must seat correctly over the hips before the waistband can sit flat.
  • The suit should be completely wrinkle-free when correctly fitted. Any bunching or gathering indicates the suit is too large and will create drag.
  • The waistband should sit flat and firm against the body with no roll or gap at the back.
  • The leg hems should end above the knee in line with WA regulations and feel snug but not restrict blood flow.
  • Allow up to 15–20 minutes to try on correctly. Take care when pulling up the suit to avoid damaging the bonded seams and Lamoral® coating.
  • Do not use petroleum-based products, oils, or creams before putting on the suit — these will degrade the water-repellent coating.
  • Rinse in cold fresh water immediately after each use. Do not tumble dry, iron, or dry-clean.
  • Reserve this suit exclusively for competition — training use will rapidly degrade the Lamoral® coating and bonded seams.
  • Unsure? Contact our team or call +44 1827 330600.
Frequently Asked Questions — Speedo Fastskin LZR Pure Intent 2 Jammer

Yes. The Speedo Fastskin LZR Pure Intent 2 Jammer is fully approved by World Aquatics (WA) and is legal for use in all sanctioned competitive swimming events, including club, county, national, and international competitions. Always check with your event organiser for any additional local or federation rules.

Both suits share the same sizing and are part of Speedo's Fastskin LZR range. The LZR Pure Intent 2 is Speedo's flagship sprint racing suit featuring maximum compression, compressive dual layers, textured fabric zones, triple fabric construction with bonded ergonomic seams, and Band Technology for a powerful leg kick. The LZR Pure Valor 2 offers moderate compression with 6x more lasting water repellency, making it better suited to distance swimmers and multi-eventers. If you race primarily at 100m or under, the Pure Intent 2 is the recommended choice.

We recommend selecting your size based on your body measurements — using your hip measurement as the primary guide. The Pure Intent 2 is Speedo's highest compression suit, so it will feel considerably tighter than other jammers. Speak to a member of staff at Allens if you are unsure.

Step into the jammer and work the fabric up gradually in small increments, starting at the ankles and moving progressively upward to the hips and waist. Do not tug sharply or pull from the waistband, as this can damage the bonded ergonomic seams. Take care with fingernails and jewellery around the Lamoral® coating. The suit should be completely smooth and wrinkle-free when correctly positioned. Allow 15–20 minutes for a first fitting.

You need to measure two points: your hip and your waist. For your hip (A), measure around the fullest and widest part of your hips with a soft tape, keeping it horizontal. For your waist (B), measure 6cm below the narrowest part of your natural waist, keeping the tape level. Compare both measurements to the sizing table above. If the two measurements suggest different sizes, use the hip measurement as the deciding factor. All measurements in the table are body measurements, not garment measurements.

The Speedo Fastskin LZR Pure Intent 2 Jammer is engineered specifically for sprint competition. It is the ideal choice for events from 50m to 200m across all four strokes — freestyle, backstroke, butterfly, and breaststroke. The Band Technology is particularly effective in sprint freestyle and butterfly events where a powerful leg kick provides significant propulsion. Distance swimmers and multi-eventers may prefer the LZR Pure Valor 2 for its moderate compression and greater flexibility.

Speedo Fastskin jammers are sized by body measurements, not standard clothing or swimwear sizes. Always use the hip and waist measurements in the table above. The Pure Intent 2 is Speedo's highest compression suit and will feel considerably tighter than any training or leisure jammer. This level of compression is correct and is a key part of what makes the suit perform at the highest level.

No. The Speedo Fastskin LZR Pure Intent 2 is a competition-only racing suit. Regular training use will rapidly degrade the Lamoral® water-repellent coating and damage the bonded ergonomic seams that are central to the suit's performance. Reserve the Pure Intent 2 exclusively for races and competition warm-ups. Speedo offer a separate range of endurance training jammers for regular pool use.

Rinse the suit thoroughly in cold fresh water immediately after every use to remove chlorine and salt. Do not machine wash, tumble dry, iron, or dry-clean. Store the suit flat and dry, away from direct sunlight. Avoid contact with sun cream, fake tan, or petroleum-based products as these will degrade the Lamoral® coating. Do not leave the suit sitting in chlorinated water for extended periods after a race.

The LZR Pure Intent 2 combines five key performance technologies in a single suit: Lamoral® Space Tech coating for water repellency, compressive dual layers for optimal muscle support, textured fabric zones that target drag reduction at specific body zones, triple fabric construction with bonded ergonomic seams that connect key muscle groups for greater power return, and Band Technology designed to amplify a powerful leg kick. Together these make the Pure Intent 2 Speedo's fastest and most technically advanced racing jammer — it is the suit worn by elite sprint swimmers at the highest level of competition.