Denim is ubiquitous in fashion these days. Hang around the FIT campus long enough and you'll spot at least a handful of students in head-to-toe denim.

For Gap, Inc. (GPS) - Get Report , the trend has been a godsend. The classic American retailer closed the second quarter with nearly an 8% market share in denim, CEO Art Peck said on an earnings call Thursday, Aug. 17.

He went on to highlight Gap's stretch denim line.

"Stretch denim is the rage across men's and women's [apparel]," Peck said during the call.

But, he went on, "the issue with stretch denim is sometimes it doesn't stretch back, and so recovery is just as important as stretch."

So Gap, in turn, has developed several fabrics across its handful of brands-including Athleta, Old Navy, and Banana Republic-that offer "excellent stretch, excellent compression, and excellent recovery."

But stretchy jeans aren't all. Peck wants investors to know about the stretch chino, which is a real "winner" as he calls it.

"It delivers everything you want in a work-appropriate, classic, clean Chino pant," he said. "It also has amazing stretch for comfort [and] stain resistance."

For the most part, consumers agree that Gap jeans are quality.

On apparel reviews site Chictopia, Gap has over 40 reviews on its jeans, averaging 4.5 out of five stars.

Gap posted a solid quarter Thursday, exceeding Wall Street expectations with adjusted earnings of 58 cents a share. Sales were down 1.4% year over year, but still higher than what was projected by analysts.

Let's hope for Gap's sake, that denim mania is here to stay.

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