As Amazon grows into the largest clothing retailer in the US, the number of returns it needs to handle will only increase. But the Seattle-based company appears to be working on a system to make sure customers get the right size the first time. A recent patent application filed by Amazon describes a few possible operating methods for a system that makes sizing recommendations to customers based on a “reference item.” Amazon would use a device, also described in the filing, to take the internal measurements of its products, allowing it to create three-dimensional models it would store in a database. As a user shops, Amazon would be able to recommend products with a similar fit based on whether its dimensions match the reference item within a certain threshold. If, say, you like the way your Converse sneakers fit, then you could be reasonably assured any sneakers Amazon recommends as a match would fit well, too. Read more at Quartz.