Two separate sources have reported that Amazon has acquired Shoefitr, a startup that makes fit data from dozens of athletic and outdoor footwear brands available to online retailers to help them reduce costly returns. 

On April 8, The Pittsburgh Business Times, which is owned by American Business Journals, attributed its report to unidentified sources familiar with the transaction. The news has since been reported by an online service that tracks equity deals.

The B.O.S.S. Report was unable to confirm the report at the time of this posting. 

Shoefitr has conducted 3D scans of hundreds of thousands of shoes from more than 1,000 brands to dial in its fit recommendations for online shoppers. Its brand partners include Brooks, Footjoy, Hoka One One, Innov 8, K-Swiss, La  Sportiva, Mizuno, Montrail, New Balance, Patagonia, Pearl Izumi, Puma, Salomon, Saucony and Sidi. Shoefitr claims it has helped retailers reduce returns by as much as 25 percent and increase conversions by an average of 13 percent.

Shoefitr raised $1.2 million in October 2011 in an equity round lead by Vital Venture Capital and the Pittsburgh angel group BlueTree Allied Angels, as well as Innovation Works, a quasi-public venture capital entity of the State of Pennsylvania. Vital also joined in the Series A Prime financing in 2013 with new and existing investors.