Nuk Warm or Cool Relief PackOur breastfeeding products are designed to make mom"s experience comfortable and trouble free. The NUK Warm or Cool Relief Packs provide immediate and effective warming or cooling relief to ease the discomfort of engorgement, blocked ducts or inflammation.Features and Benefits Can be used warm or cool depending on mom"s need Relieves discomfort from engorgement, blocked ducts and mastitis Unique shape conforms to a variety of breast sizes Soft, hand-washable fabric for added comfort Specifications2 reusable packs