The Buds & Blooms Breast Relief Doughnut is a comfortable warm compress specially fitted for breastfeeding mothers. Each box has 2 pcs. 

WARM:

Moms can microwave the doughnut and apply it as a warm compress on breasts before nursing to help increase breast milk production and easier let down of milk flow.

COLD:

Moms can also leave this in the freezer and it will gives relief from soreness after feeding. 

Featured on Mommy Kryz Uy's Youtube: "Boob Warmers"

Snippet Above was credited from Full Video here:

How to Heat Without a Microwave: