PBT Polyester
Polybutylene terephthalate fiber used in performance swimwear. Superior chlorine resistance compared to standard polyester, with excellent elastic memory that keeps swimsuits fitting like new for longer.
Score Breakdown
How long the fabric lasts with regular use
Softness, feel against skin, wearability
Air flow and ventilation
Heat retention and insulation
Ability to pull sweat away from skin
Environmental impact of production and disposal
How easy it is to wash, dry, and maintain
Best For
Good durability (78) and comfort (55) for office wear
Good moisture wicking (65) and durability (78) for weather protection
Detailed Use Case Scores
Pros
- ✓ Best-in-class chlorine resistance among swimwear fibers
- ✓ Excellent elastic recovery — holds shape through hundreds of wears
- ✓ Colorfastness resists fading from pool chemicals
- ✓ Smoother hand feel than standard polyester
Cons
- ✗ More expensive than regular polyester swimwear
- ✗ Derived from petroleum — poor sustainability
- ✗ Not breathable for non-aquatic use
- ✗ Limited availability in retail fabrics
Care Guide
Special Notes
• Rinse after every swim
• Never use fabric softener
Additional Care Tips
- • Rinse in cold water after each use
- • Hand wash with mild soap — avoid harsh detergents
- • Lay flat to dry in shade — avoid direct sunlight
- • Never use fabric softener — it degrades the fibers
- • Store flat, not hanging, to preserve elastic memory
Cost
$$$$$
Mid-range
Shrinkage
Minimal shrinkage — follow care instructions
Eco Rating
High environmental impact