Speedo Fastskin LZR Ignite Jammer Size Guide

This size guide covers the Speedo Fastskin LZR Ignite Jammer — a World Aquatics approved men's competition racing jammer engineered to feel comfortable during long race meets. Part of Speedo's Fastskin LZR range, the LZR Ignite is designed for swimmers who want all the benefits of a racing suit with moderate compression and a softer, more comfortable feel from box to blocks. Whether you are racing hard or supporting your teammates throughout a full day of competition, the LZR Ignite Jammer delivers race-ready performance without the restrictive fit of a maximum compression suit.

Key features include compressive woven fabric, leg grippers, and bonded dual-layer inner panels that deliver the look and feel of a racing suit, advanced water-repellent coating to help you glide through the water at speed, and Speedo's softest Fastskin waistband with silicone gripper for improved comfort and a secure fit. The LZR Pulse multi-directional stretch fabric adds flexibility without compromising the water-repellent finish. Tested and developed to meet the needs of real swimmers, the LZR Ignite is durable and designed to retain its shape for a race-ready fit, time after time. All measurements are body measurements taken from your own body, not garment measurements.

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

To find your correct Speedo Fastskin LZR Ignite Jammer size, use a soft measuring tape and take measurements directly against your skin. Always use your hip measurement as the primary guide and refer to the sizing table below.

  • 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 LZR Ignite Jammer uses moderate compression and is designed to feel comfortable throughout a long race meet. It will feel firmer than a training jammer but less restrictive than Speedo's maximum compression Fastskin suits such as the LZR Pure Intent 2.

Sizing Table — Men's Fastskin LZR Ignite Jammer
Size 18 Size 20 Size 22 Size 24 Size 26 Size 28 Size 30
Body Measurements
Waist cm 63.5–69.0 69.0–74.5 74.5–80.0 80.0–85.5 85.5–91.0 91.0–96.5 96.5–102.0
Hip cm 78.5–84.0 84.0–89.5 89.5–95.0 95.0–100.5 100.5–106.0 106.0–111.5 111.5–117.0

All measurements are body measurements, not garment measurements.

Fit Notes — Speedo Fastskin LZR Ignite Jammer
  • The Speedo Fastskin LZR Ignite Jammer uses moderate compression and is designed to feel comfortable throughout a long race meet — it will feel firmer than a training jammer but significantly less restrictive than maximum compression racing suits such as the LZR Pure Intent 2.
  • If your hip and waist measurements fall into different size brackets, use your hip measurement as the primary guide, as the jammer needs to seat comfortably over the hips before the waistband can sit flat.
  • The silicone gripper waistband should sit flat and secure against the body with no roll or gap at the back. The waistband is Speedo's softest Fastskin waistband, designed for all-day comfort during long competition days.
  • The suit should be completely wrinkle-free when correctly fitted. Any bunching or gathering indicates the suit is too large.
  • The leg grippers should sit snugly at the top of the thigh, keeping the leg opening in place during racing without digging in.
  • The leg hems should end above the knee in line with WA regulations and feel snug but not restrict blood flow.
  • Allow up to 10–15 minutes to try on correctly. Take care with fingernails and jewellery when pulling the suit up to avoid damaging the water-repellent coating.
  • Do not use petroleum-based products, oils, or creams before putting on the suit — these degrade the water-repellent coating.
  • Rinse in cold fresh water immediately after each use. Do not tumble dry, iron, or dry-clean.
  • Unsure? Contact our team or call +44 1827 330600.
Frequently Asked Questions — Speedo Fastskin LZR Ignite Jammer

Yes. The Speedo Fastskin LZR Ignite 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.

The LZR Ignite sits at a different point in the Fastskin LZR range to the Pure Intent 2 and Pure Valor 2. The Pure Intent 2 offers maximum compression for sprint racing, and the Pure Valor 2 offers moderate compression with 6x more lasting water repellency for distance and multi-event swimmers. The LZR Ignite is designed for swimmers who want all the benefits of a racing suit with a softer, more comfortable feel — making it ideal for long race meets, young competitive swimmers stepping up to tech suits, or swimmers who want a race-legal suit with an easier, more comfortable fit throughout the day.

The LZR Ignite Jammer should feel firm and compressive but comfortable — noticeably tighter than a training jammer but less restrictive than Speedo's maximum compression Fastskin suits. The waistband should sit flat with no roll, the leg grippers should hold the leg openings in place without digging in, and the suit should be completely wrinkle-free when correctly fitted. The suit is designed to be worn comfortably for extended periods during a full day of competition.

We recommend selecting your size based on your body measurements — using your hip measurement as the primary guide. Speak to a member of staff at Allens if you are unsure.

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 Ignite Jammer is suited to all competitive swimming events and all four strokes. It is particularly well suited to swimmers competing across multiple events in a day, or those attending long race meets where comfort throughout the competition day is as important as race performance. It is a popular choice for club and county-level competitive swimmers and those stepping up to a Fastskin racing suit for the first time.

The LZR Ignite Jammer is a competition racing suit and is not designed for regular training use. Using it for training will degrade the water-repellent coating and shorten the lifespan of the suit. For training, Speedo offer a wide range of endurance training jammers. Reserve the LZR Ignite for races and competition warm-ups to maintain its performance and durability.

Yes. The Speedo Fastskin LZR Ignite Jammer is a popular choice for younger competitive swimmers stepping up to a Fastskin racing suit for the first time. Its moderate compression and softer, more comfortable fit make it easier to put on and wear throughout a long competition day compared to maximum compression suits. It is World Aquatics approved and suitable for use in all sanctioned competitions.

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 water-repellent coating. The LZR Ignite is designed to retain its shape over time, but regular care after each use is essential to maximise the lifespan of the suit.

The LZR Ignite Jammer combines race-ready performance technology with all-day comfort. Key features include compressive woven fabric, leg grippers, and bonded dual-layer inner panels for a race suit look and feel; advanced water-repellent coating for speed through the water; Speedo's softest Fastskin waistband with silicone gripper for a secure, comfortable fit; and LZR Pulse multi-directional stretch fabric with a water-repellent finish for flexibility without compromising performance. It is also durable and designed to retain its shape for a race-ready fit time after time — making it an excellent long-term investment for competitive swimmers.