A $20 bikini and a $150 bikini are both bikinis. The question is whether the difference in price reflects a difference in value -- and if so, what kind of value, for whom.
Here is an honest breakdown.
What fast fashion swimwear actually costs
The sticker price of fast fashion swimwear is low. Everything else about it tends to cost more than it appears.
Material quality
Fast fashion swimwear is typically made from virgin polyester or low-grade nylon. These materials are cheap to produce but perform poorly over time -- they fade, lose shape, and develop pilling within one to two seasons of regular use. A $20 bikini replaced every summer costs $100 over five years. A $150 bikini that lasts five seasons costs $30 per year.
Environmental cost
Virgin polyester is derived from petroleum. Its production emits significant greenhouse gases and the material does not biodegrade. Polyester swimwear also sheds microplastic fibres when wet -- these enter waterways and the ocean, where they accumulate in marine life and eventually in the food chain.
Fast fashion business models are built on volume. High volume means high production, high waste, and high emissions at every stage of the supply chain.
Human cost
A $20 bikini cannot be made ethically at that price point in most manufacturing contexts. The margin structure does not allow for fair wages, safe conditions, and reasonable hours. This is not a universal rule -- there are exceptions -- but the economics are difficult to argue against.
What sustainable swimwear actually costs
Sustainable swimwear costs more upfront for several genuine reasons:
- Certified recycled materials cost more than virgin materials. ECONYL® and REPREVE® are more expensive to produce than standard nylon because the collection, sorting, and regeneration process adds cost.
- Ethical manufacturing costs more. Factories paying above-minimum wages, running safe conditions, and operating at lower volume than mass-market suppliers charge accordingly.
- Small-batch production does not benefit from economies of scale. An independent brand ordering 200 units of a style pays more per unit than a fast fashion brand ordering 20,000.
- Certified dyes and packaging cost more than uncertified alternatives.
None of these costs are padding. They reflect real differences in how the garment was made.
The longevity calculation
This is where the value comparison is most concrete. Quality swimwear made from ECONYL® or REPREVE® recycled nylon, cared for properly, should last three to five seasons. Fast fashion swimwear typically lasts one to two.
At Raw X Salt, our swimwear ranges from $79 to $189 AUD. Over five seasons, the cost per year is $16 to $38. A $25 fast fashion piece replaced every season is $25 per year -- and produces more waste, more emissions, and more demand for exploitative manufacturing in the process.
What you are not paying for with sustainable swimwear
It is worth being clear about what sustainable swimwear brands are not doing. Most independent sustainable swimwear brands are not running large marketing budgets, paying for celebrity endorsements, or operating retail stores with high overheads. The price reflects the product, not the brand apparatus around it.
The greenwashing caveat
Not all "sustainable" swimwear is equal. The label is unregulated and easy to apply. A brand can use one recycled material in one product and call the whole brand sustainable. Check for:
- Named, certified materials (ECONYL®, REPREVE® -- not just "recycled fabric")
- Named manufacturing partners and countries
- Third-party certifications (OEKO-TEX®, bluesign®, Fair Wear Foundation)
- Transparency about what they do not yet do as well as what they do
The bottom line
Fast fashion swimwear is cheap upfront and expensive in aggregate -- financially, environmentally, and for the people who make it. Sustainable swimwear costs more upfront and less over time, with a significantly smaller footprint.
The choice is not always straightforward -- budget is real, and not everyone can spend $150 on a bikini. But understanding what drives the price difference helps make a more informed decision, whatever that decision is.
Raw X Salt swimwear starts at $79 AUD for separates. All made from certified recycled fabrics, manufactured ethically in Bali, shipped carbon-neutral from Australia.