Therapeutic Relief: Breast Pad provides soothing relief for the most common breastfeeding. Cold therapy is great for relieving engorgement. hot therapy helps relieve mastitis and encourages milk let-down while using a breast pump. Breast Pump Aid: Heat the pads and insert in the covers and snap onto any breast pump to increase milk production and reduce time spent pumping. Breast Pads Diameter: 6.7 inches. Package includes 2 pack gel breast therapy pads. 2 pack soft flannel cover. Easy to use and carry. It is a must have for any breast feeding moms. Easy to Use: Simply place the breast pad in refrigerator or hot water until desired temperature for a hot/cold effect. Use hot: To help relieve engorgement. plugged ducts and mastitis. and encourage milk let down. Use cold: To help relieve pain and swelling due to engorgement. Wide Usages: Breast pad can be used in the period of pregnancy. lactation. and weaning. and can be used in other occasions. Provides soothing warm or cool relief. relieving your aches and pains.