In Charlestown mum Yvette Sinclair's case, her three offspring inspired her pram company, Saint Infans.

In 2017 she was walking her youngest child in a pram when a wheel fell off.

"I walk everywhere and I'd unfortunately become quite the pessimist in relation to the quantity and longevity of the prams we had purchased, and how much they cost," she says.

Discussing the issue with her husband Brett, she worked out they had worn through about five "mid to high-end" prams in18 months, each costing between $1000 and $1500.

The duo determined to use their nous and a manufacturing contact in China to create their own brand.

"We conducted very little research about the competition, our focus was on what we wanted to create - our ideal pram and how we could make that affordable," says Ms Sinclair.

It took about six months for the Saint Infans' staple pram/stroller, the Puggle, to be designed and another 10 weeks of testing to ensure it met Australian manufacturing standards before production began, with an initial investment of about $50,000. It launched in November, 2018, after a 16-month development period.

"Your pram is your 'everything' once you are out and about with your baby - the one thing you want to get right, especially with a newborn," says Mrs Sinclair. "It's your baby's bed, chair, dining room all in one, your transportation, security, shopping basket and mobile nursery. It's a part of your style and it must be practical."

She aimed to design a beautiful but functional pram in the "middle market" price range of $899. [The middle market is from $650 to $1000, with market leaders priced around $1800).

She believes the Puggle's frame - designed with no welds or bolts to optimise its strength to weight ratio, ensuring it is light and easy to fold down - is unique. Other features include four wheel suspension, puncture-proof wheels and the use of durable linen and natural fabrics.

Designed for newborns to toddlers, the Puggle has forward and rear facing modes and car seat compatability.

Saint Infans is developing accessories and options such as bassinets, car capsule adaptors, foot and rain covers and cup holders.

"Our next step involve more functional accessories around the pram including a travel organiser, or a handle bar bag that converts to a handbag, and a separate range of handbags that offer internal function and external style - a mummy bag in disguise," Mrs Sinclair says.

Saint Infans will be at the Pregnancy, Babies and Children's Expo in Sydney from May 17-19.