Choosing the right size is crucial with a competition suit — too tight and you lose comfort, too loose and you lose speed. The Speedo Fastskin Hyperspark is designed for beginner competition swimmers and has a fit that combines support with flexibility. In this Speedo size guide, we help you determine your ideal size step by step and explain what to look out for when measuring and trying it on.
The fit of the Speedo Fastskin Hyperspark
Speedo's competition suits are known for having a slightly roomier fit than some other brands. This means they often suit swimmers with somewhat wider hips or stronger upper legs better. The Hyperspark offers light compression — enough to provide stability in the water, while remaining flexible enough to put on without too much effort.
The competition kneeskins for women provide support around the bust, waist and hips, while the competition jammers for men provide stability around the waist and upper legs without restricting movement.
For women: Speedo Fastskin Hyperspark Competition Kneeskin
How to measure your size (women)
Use a flexible tape measure and measure directly against the body. Do not pull the tape too tightly — it should sit firmly without digging in.
The four key measurements for women are:
Bust measurement
Measure around the fullest part of the bust, keeping the tape horizontal around the body.
Waist measurement
Measure around the narrowest part of the waist, usually just above the navel.
Hip measurement
Measure around the widest point of the hips and bottom. The hip measurement is the most important reference when choosing your competition kneeskin, as the suit has to be pulled over the hips. If the suit is too small around the hips, you simply will not be able to get it on properly.
Bodyloop (torso)
Start at the top of one shoulder, take the tape measure between the legs and back up to the starting point. This gives the total length of the suit and shows whether it will feel too short or too long.
Speedo size chart for women
Use the table below to compare your measurements with Speedo's sizing for women.
👉 View the size chart for women:
💡 Tip: Are you between two sizes?
Choose the size that best matches your hip measurement. The hips are the most important reference point — if the suit is too tight there, you will not be able to pull it properly over your body. A well-fitting competition kneeskin should be tight, but not so tight that you cannot move or breathe freely.
Trying it on: women
When trying on the Speedo Fastskin Hyperspark competition kneeskin, it may take a little longer to put on — this is normal with competition suits. Pull the suit on slowly so the fabric moves up evenly and the shoulder straps are not placed under too much tension.
Make sure that:
- the suit fits evenly everywhere, particularly around the bust and hips;
- the shoulder straps sit firmly without pulling;
- the suit does not feel too short (check the bodyloop).
The competition kneeskin should fit tightly, but you should still be able to breathe freely and move your arms fully. A well-fitting Hyperspark feels like a second skin — firm, but comfortable enough to wear for longer periods.
For men: Speedo Fastskin Hyperspark Competition Jammer
How to measure your size (men)
Use a flexible tape measure and measure directly against the body, without clothing. Do not pull the tape too tightly — it should sit firmly without digging in.
The two key measurements for men are:
Waist measurement
Measure around the narrowest part of the waist, usually just above the navel. Keep the tape measure horizontal and make sure it is firm but comfortable.
Hip measurement
Measure around the widest point of the hips and bottom. This determines how tightly the competition jammer fits around your legs.
Speedo size chart for men
Use the table below to compare your measurements with Speedo's sizing for men.
👉 View the size chart for men:
Trying it on: men
When trying on the Speedo Fastskin Hyperspark competition jammer, it is important that the fabric fits closely without digging in. Pull the jammer up slowly, a little at a time, until the waist sits correctly. The suit should feel tight, but you should still be able to move without the seams pulling or the fabric becoming distorted. Check that:
- the waistband fits firmly without digging in;
- the legs sit evenly and do not roll up;
- there are no air pockets or folds around the hips or upper legs.
A well-fitting competition jammer provides light compression and remains stable during starts and turns, without compromising your freedom of movement.
Common mistakes when choosing a size
- Choosing a size that is too small “for extra compression” – this can restrict your freedom of movement.
- Not measuring the bodyloop correctly, making the suit seem too short.
- Comparing it with training swimsuits – competition suits are designed to fit more tightly.
In brief
The Speedo Fastskin Hyperspark is designed with a fit that combines comfort and support, making it particularly suitable for swimmers with a slightly broader build.
Use the correct measuring points and compare your measurements with the tables above to find your ideal size.
Pay particular attention to your hip measurement — if the suit does not fit properly there, you will not be able to get it on correctly.