We did it! We had Iron Knees® down pat for boys’ pants, so we jumped for joy — and you will, too — with our latest invention: strong Iron Knees® patches that don’t pucker or pull and are invisible from the outside, too! The secret lies in all-way stretch patches added to the knees of our already durable denim. We designed these magic patches to work wonders in fabric with a hint of spandex, which all our girls’ jeans have. So, she can run, jump and play freely without worry of holey knees!