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.
Material Score Breakdown
7-axis material rubric, not a garment verdict — see disclosure below.
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
Products with pbt polyester
We don't have any garments containing pbt polyester in our catalog yet. Browse the full synthetic materials or check the product catalog.
What this score doesn't measure
This is a material rating, not a verdict on any specific garment made from pbt polyester. The axes above are research-backed averages for the fiber itself.
- ×Construction. Yarn staple length, weave / knit structure, stitch count, finishing. Identical fiber, very different garments.
- ×Fabric weight (GSM). A 140 GSM tee and a 220 GSM tee made of the same pbt polyester feel and last very differently.
- ×Dye + finishing chemicals. Beyond the three we flag (PFAS, formaldehyde, antimony), dozens of textile finishes aren't modelled.
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
Better alternatives
Higher-scored synthetic materials. Same category — what to consider instead.
+16 vs PBT Polyester · 76/100
Membrane technology that is waterproof yet breathable. A laminate applied to other fabrics rather than a fabric itself.
+15 vs PBT Polyester · 75/100
Ultra-high-molecular-weight polyethylene (UHMWPE) fiber — the world's strongest fiber by weight. 15x stronger than steel, used in cut-resistant gear, ultralight backpacks, and high-performance sails.
+14 vs PBT Polyester · 74/100
Waterproof breathable membrane fabric (Gore-Tex, eVent, or similar technology) laminated to a face fabric. The gold standard for rain and storm protection in technical outerwear.
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