Allbirds co-founder Tim Brown remains bullish he can steady the ship. 

The company's shares dived to a new low of US-80 cents in post-market trading earlier this month, a long way from its $26.03 high after its debut two years ago. 

It also forecasts its Christmas revenue will be around 15 to 22% percent lower than the same time last year. 

But Brown told Mike Hosking that their idea has been resilient for so long, and it will soon pay dividends. 

He says their focus on sustainability and natural materials is part of where the world's going, and there's some extraordinary opportunities to come. 

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