THORNTON, Colo. -- A Thornton family wants to know who would steal a swing that allows a disabled 5-year-old the freedom to be outside.

It's the second time the specially designed adaptive swing has been stolen in the past three months.

"It's heart breaking it's happened again," a tearful Cindy DeSplinter told 7NEWS.

DeSplinter's son Micah has Cerebral Palsy and uses the swing for therapy as well as enjoying the outdoors.

DeSplinter said his disability, combined with a lung disease, prevents him from going to parks. The swing allows Micah to recline while supporting his body.

When the first swing was stolen in July, the family installed a privacy fence in hopes of reducing visability from an adjacent park.

"So the second time it feels almost more purposeful, I don't know if it's the same people, or new people," DeSplinter said.

The chair costs about $500. The family was able to purchase the first chair through a Medicaid benefit. An anonymous donor replaced the swing in July.

Thornton Police were able to lift fingerprints although no suspect has been identified. A spokesperson said investigators are at a loss as to why anyone would want the chair, much less two.

DeSplinter said the swing is made of strong plastic and very heavy. She has a message for whoever may be responsible.

"You know what, stop by and meet Micah you might change your mind about what you're doing," DeSplinter said. "There's a lot of people out there saying 'It's a swing, it doesn't matter.' Well, it matters to Micah and it matters to us and that's what matters."