Basically wearing the masks for longer makes the ears sore. 

Key Features :

• Mask Hook Holder for Relieving Long-time Wearing Ears' Pressure&Pain for Adult and Child
• It comes with Acrylic Clear material and different shapes to choose from.
• The buckle design is easily adjusted to make the mask more compact and comfortable to wear.
• It's perfect for healthcare workers who need to wear them for long periods of time.
• Size: L= 7.5 cm W=3 cm