4moms has hit a market sweet spot: Its strollers, playpens, and other gear are useful to both adults and children.

4moms, which just closed $41 million in a second round of funding, doesn’t just keep your child occupied and entertained: Its Origami stroller’s rear-wheel generator can charge your iPhone.

And because it’s high-tech baby gear, the stroller folds itself with the push of a button. Other products include a baby bath and a bath tub spout cover.

“The company is a category leader with an innovative and differentiated approach in the baby products and gear space which is enthusiastically embraced by retailers and customers alike. We really look forward to working closely with the 4moms team and our partners at Bain Capital Ventures to support the company’s continuing growth,” said Castanea Partners managing partner Robert Smith in a statement. Castanea Partners led the new round, with additional participation from Bain Capital Ventures.

The company will use the new funds toward developing new products, as well as growing the company.

According to the company, 4moms products are sold in 2,000 stores in 52 countries around the world.

4moms was founded in 2005 by two men, Henry Thorne and Robert Daley, and is based in Pittsburg, Pa. This new round of funding brings its total to about $84 million.

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