- Duramax is polyester/PBT
- Speedline is Polyester/PBT
Speedline stretches more than Duramax, a Speedline swimsuit will fit more body types than a Duramax swimsuit.
Both fabrics are almost identical in terms of chlorine resistance.
A Speedline and a Duramax swimsuit unlined may be transparent.
Speedline fabric is shinier than the Duramax fabric.
Speedline fabric snags more than Duramax fabric when in contact with rough surfaces.
Speedline weights less than Duramax.
Speedline is a manufacture with recycle material.