Lego says a drive to remove fossil fuels from its bricks is making further progress but the alternatives, while better for the environment, are more expensive.
The Danish toymaker said it remained on track to meet its 2032 target of removing climate-damaging products from its ranges while revealing half-year results.
Lego said on Wednesday it had agreed contracts to secure a long-term supply of greener alternatives.
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It revealed 22% of resin used in its bricks over the first half of 2024 used material from renewable and recycled sources, up from 12% in 2023.
Lego said that stronger profits had allowed it to invest to increase the amount of resin purchased from sustainable sources.
It revealed that operating profits grew 26% to 8.1bn Danish Krone (£920m) over the first six months of 2024.
That was on the back of a 13% rise in revenue – driven by consumer sales in the core markets of Europe and the Americas.
It is understood there are no plans to raise prices to protect the company’s bottom line from the higher input costs.
The update marked further progress in the company’s efforts to go green, having initially struggled to find sustainable and suitable alternatives in its manufacturing processes.
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Chief executive Niels B Christiansen said: “We delivered double-digit growth on the top and bottom line and made significant progress on increasing the amount of sustainable materials used in our products.
“Our portfolio continues to be relevant for all ages and interests, and this is driving significant demand across markets.
“We used our solid financial foundation to further increase spending on strategic initiatives which will support growth now and in the future to enable us to bring learning through play to even more children.”