in British English
NOUN. informal. 
             A swimming costume.
Pronunciation /ˈkɒzi/ or [ koz-ee ]

Former fashion executive Isobel Elphinstone founded COSSIE+CO with a single concept in mind: Swimwear for the Modern Woman.

We see the beauty in simplicity and have recognised the demand for simple yet flattering COSSIES, made from beautiful fabrics. Our signature honeycomb fabrication is synonymous with the brand, double lined across all styles giving an element of natural support and a super luxurious feel.

All styles transcend seasons and trends, creating a collection that is made to last, COSSIE’s that you keep coming back to year after year. 


We love the planet + know you do too.

As we expand and grow, we understand the importance of minimising our impact, quality over quantity is at the heart of our brand.

We manufacture conservative size runs to minimise over-production and waste. Any left over fabric is used for sampling or production the next season. 

On the long path to being a sustainable brand we are proud to have partnered with the global movement 1% for the Planet, donating 1% of all our revenue to support environmental causes close to our heart.

We are approaching the future with integrity and transparency, keeping social and ethical responsibility paramount whiles aspiring to minimise our impact on the environment.