Tech suits are built to cut drag
Tech suits use a lightweight, tightly woven fabric. Ultrasonically bonded seams cut drag further, and the fabric carries a higher share of water-repelling Lycra (elastane/spandex). The whole design pushes compression and water repellency to their limits. That performance only holds for about 300–400 hours of chlorine exposure, 6–10 full meets, or 3–6 months of competitive use. Elite swimmers, for whom margins matter most, sometimes replace a suit after just 3–4 championship meets.
Training suits are built for everyday use
Training suits use a thicker polyester/nylon fabric with a looser weave for breathability and durability. Chlorine-resistant materials are prioritized so the suit can hold up to daily wear. Wearing a tech suit to every practice would burn through its 300-hour limit in about 15 weeks (four months) for a swimmer training 20 hours a week. That’s why it works better to train in a training suit and save the tech suit for competition.
Looked at as a cost per wear
Depending on how well it’s cared for, a tech suit’s compression starts to fade after roughly 6–12 meets or 10–12 wears. Elite swimmers sometimes replace theirs after just 3–4 championship meets — the number of usable wears is built to be short. Training suit fabric is made to hold up to daily wear, so it lasts for far more wears over the same period. Even at the same purchase price, a different number of wears means a different cost per wear.
Competition wear has to clear an approval process
To get World Aquatics (formerly FINA) approval, a manufacturer has to submit an online application and technical drawings for each model. The fee is 1,000 euros per model, or 750 euros for equipment like caps and goggles. The approval process only moves forward once a finished sample and at least one square meter of every fabric used in the suit are sent to the Swiss headquarters. Approved suits are limited to woven or knit textile materials — non-textile materials like neoprene are banned. Total thickness can’t exceed 0.8 millimeters either, so the suit works only through compression and hydrodynamic effects. It’s worth confirming ahead of time whether the rules for the meet you’re entering match this approved list.
What to look out for
Wearing a tech suit to daily practice. Picking one for training based only on compression and drag reduction. Not checking the approval list and the meet’s own rules before competing.
Relevant suits
| Suit | At a glance | Sizes | Price | |
|---|---|---|---|---|
 Speedo Speedo Girls Digital Allover Leaderback Swimsuit - Deep Sapphire/Mayan Blue | Chlorine-resistant | 5-6 years,7-8 years,9-10 years,11-12 years,13-14 years,15-16 years | $24 | Allens Swimwear→ |
MI Mizuno Mizuno EXER Women’s Thick Strap Swimsuit | Chlorine-resistantone-piece | 8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40 | $70 | Amazon→ |
OR Orca Orca Women’s Core One Piece Swimsuit | Chlorine-resistantone piece | XS,S,M,L,XL,2XL | $49 | Amazon→ |
A3 A3 Performance A3 Performance Solid Male Polyester Brief Swimsuit | Chlorine-resistantbrief | 22,24,26,28,30,32,34,36,38 | $33 | Amazon→ |
NI Nike Nike Women’s HydraStrong Solid Lace Up Tie Back One Piece Swimsuit | Chlorine-resistantone piece | 24,26,28,30,32,34,36,38,40 | $47 | Amazon→ |
Prices as of Sep 16, 2026. Check the retailer for the current price.
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FAQ
Is a tech suit better for kids' training too?
Tech suits are built around performance, so they wear out faster and need replacing more often. For junior swimmers training daily, a training suit is the more practical choice.
How do I check whether a tech suit is approved?
You can check the list of approved models that World Aquatics publishes. It’s also worth confirming with the meet organizer whether that event’s rules match this list.