Whether you're a weekly swimmer or a poolside dreamer, swimwear is a staple that can be difficult to get right.
Balancing practicality with comfort can be one big minefield. Not to mention dealing with the environmental impact of the materials that your swimsuit is made out of.
Nylon, one of the most popular materials for making swimwear, has an array of very non-environmental credentials. Its production creates a greenhouse gas (nitrous oxide), and it's lack of biodegradable status causes a problem when old bikinis are thrown out.
When Rosie Cook founded swimwear brand Deakin and Blue in June this year, choosing a recycled and sustainable fabric for her pieces was an absolute no brainer.
"It seemed like an obvious decision to choose a sustainable fabric," she tells us. "At this point, why would we do anything else?"
Now used by major swimwear brands such as Speedo and Arena, Econyl is made from collected waste materials such as abandoned fishing nets and old carpets, which are broken down into polymers and then reconstructed into different materials.
For this reason, it's perfect for sportswear due to its newfound durability, having had its natural strength built back into it by its manufacturing process. It also has some very pool-friendly additional qualities.
"All of our swimsuits are two times more durable against chlorine and suncream thanks to the Econyl. It's fantastic all around," she tells us.
For Rosie, the next step for swimwear shopping is to shift the stereotype surrounding recycled fabrics.
"The word 'recycled' in terms of fashion often makes people think they will be sacrificing in terms of levels of luxury, quality or fashion value. I honestly wouldn't be able to tell the difference with Econyl. If anything it's smoother," she says.
Although she feels that fast fashion is still a big problem, Rosie is proud of taking a step in the right direction with Deakin and Blue.
"I can see that people want to use their disposable income to make sure they are being more sustainable, it has been fed into our social values. And this is having an impact on the fashion industry."
"Things are changing."