Lululemon Athletica Inc. is restocking its Luon black yoga pants after pulling them in March for being too sheer, Lululemon said in a statement.

The company raised the standards of the Luon fabric and put the material through 15 tests of specific components including colorfastness and burst strength, according to the press release.

The company disclosed on March 18 that some of the Luon garments didnt meet its standards because they became too sheer when wearers bent over. Full refunds or exchanges were offered to customers who bought the pants after March 1.

According to Lululemon’s statement. Lululemon has adjusted the shape of the garment pattern to ensure the pants wont stretch beyond their ability while still fitting the body.

We know that our guests want their Wunder Unders to be form fitting, and provide the appropriate amount of coverage, the statement said. Maintaining the integrity of the style and fit is a big priority for us, and making sure that our guests are in the right size pant is an important part of the equation.