Step up your look with the Jeffrey Campbell Charm Mule Heels, featuring an open toe and finished with a playful charm detail for just the right touch of glam. Step up your look with the Jeffrey Campbell Charm Mule Heels, featuring an open toe and finished with a playful charm detail for just the right touch of glam. Since 2000, Campbell and his wife Christina have created footwear that’s at once accessible, comfortable, and fashion-forward, delighting their fans with a constant stream of new styles that reflect an uncanny ability to anticipate upcoming fashion trends.