Cold Therapy for Cooling Relief - Simply freeze the Momcozy breast therapy packs at -18℃/-0.4℉ for at least 4 hours. Use them cold after nursing, pumping, or a long day of breastfeeding to enjoy a refreshing, cooling sensation that helps you relax and feel more at ease. Ideal for breastfeeding moms, exclusive pumpers, and those using a wearable breast pump-perfect for soothing after extended nursing sessions or night feedings. | Hot Therapy for Warm Comfort - Heat in boiling water (over 80℃/176℉) for 2 minutes or in the microwave for 70 seconds at 350 watts. Use warm therapy before breastfeeding or pumping to help stimulate milk flow, ease let-down, and enhance comfort. Perfect for preparing before early morning feedings or increasing comfort during long pumping sessions at work or on the go. | Larger Design for Full Breast Coverage - Featuring an extra-large size and gel-filled design, these breastfeeding heat and ice packs provide 360° coverage, fitting comfortably inside nursing bras or around breast pumps. Convenient for working moms, postpartum recovery, and on-the-go nursing mothers | Essential for Breastfeeding & Postpartum Recovery - Designed for new moms, expecting mothers, and postpartum care, these hot and cold breast therapy packs make a perfect baby shower gift, hospital bag essential, and breastfeeding support tool. | Safe to Use - The gel is non-toxic and BPA/ BPS free, making it a reliable choice. The soft and flexible material is also gentle on your skin.