What magical artifact does the nymphs give to Perseus to help him?

The nymphs provide Perseus with a reflective bronze shield, which he uses to view Medusa's reflection and avoid her petrifying gaze. Additionally, they give him a pair of winged sandals for flight, a magical bag to safely contain Medusa's head, and a helm of invisibility. These gifts are crucial for his successful quest to defeat Medusa and complete his mission.