Soul Cap say the international governing body for swimming rejected an application for their caps to be certified for use at competitions. They say Fina told them the caps are unsuitable because they don't follow "the natural form of the head".

Soul Cap makes swimming caps to fit over and protect dreadlocks, afros, weaves, hair extensions, braids, and thick and curly hair. One young swimmer said she was "heartbroken but not surprised" by the decision.

Kejai Terrelonge, 17, told Radio 1 Newsbeat that hair-care is one of many barriers she's faced as a black swimmer.

"Using the smaller swimming caps that everyone else would use - it would fit on my head but because I put [protective] oil in my hair, when I was swimming it would just keep sliding off and my hair would get wet," said Kejai, who lives in Birmingham.

Afro hair is naturally drier than other hair because it has fewer cell layers. The sodium hypochlorite - or bleach - found in swimming pools can dry it out more, leading to damage.

Kejai's mum, Keisha Omojowo-Howe, says Soul Caps are "amazing to keep our big hair dry".

She worries Fina's decision could "stop the ripple effect" of black children like Kejai being inspired by swimmers such as Alice Dearing - who will be the first black woman to represent Great Britain in an Olympic swimming event at Tokyo 2020 later this summer.

Alice, 24, hasn't shared her views on the decision by Fina, but in 2019 she told Newsbeat she understood why black girls might quit swimming because of their hair.

And in February this year she said she felt "blessed" to be an ambassador for Soul Cap, "which has recognised a serious issue within the black community worldwide" and is "dispelling the myth that swimming equipment cannot be inclusive".

Soul Cap told Newsbeat that Fina said to their "best knowledge, the athletes competing at the international events never used, neither require to use, caps of such size and configuration".

Fina have neither confirmed nor denied that they made this statement - and have not responded to the BBC's request for comment.

Swimming coach Tony Cronin, 22, says he's "disappointed" by Fina's wording about Soul Caps not following "the natural form of the head".

"It just shows misunderstanding and ignorance," he tells Newsbeat.

"For small swim caps you have to make sure you have your hair braided so it can actually fit in them. Then you worry about getting your hair wet because you'll have to go clean it, condition it, comb it out. It's like a full-time job.

"So to see Soul Cap come out with a hat that actually helps us, but then to be told: 'Yeah, we don't want you to use them,' it's just terrible."