The uLace product line currently includes 4 unique sizes - lengths - which are made to fit the designs of different sneakers. The size of uLaces you need for your sneakers really depends on the way each pair of sneakers you wear is designed. . A man wearing a size 13 slim-fitting fashion sneaker may require the same uLace size as a woman wearing a size 6 classic-styled sneaker. This is why we have a Find Your Fit helper built into the site. Click through to the Find Your Fit page to explore.