"swimming cap" is a grammatically-correct and usable phrase in written English.
For example, "Be sure to bring a swimming cap if you plan on swimming in the pool."
I doff my swimming cap to the great Ian Thorpe.
In the school's sprawling sports centre, a signed shirt and swimming cap decorate the reception wall.
At 9am I turned up to a warm welcome, a free Brockwell Swimmers swimming cap, and smiles and encouragement all round.
Children were tested wearing minimal tight-fitting clothing (swimming suit) and swimming cap to compress the hair [ 34, 35].
In order to mark the locations for rTMS application, a tightly fitting lycra swimming cap was fitted on each participant's head.
Mono and swimming cap are also an option.
Make sure you have your swimming costume, towel and anything else i.e. goggles, swimming cap you may need.
Her own design is a Swarovski crystal-encrusted swimming cap.
This absence is also apparent in other drawings, such as one of her mother's swimming cap.
Petry had changed into a dark-blue one-piece and a swimming cap.
We are all equal in a swimming cap, as I've been known to say.
