Product listings identify the breast therapy packs as polyester and the refreezable ice pucks as plastic.
Care varies by item: one product recommends spot-cleaning or wiping, while the other can be washed with soap and water.
The packs are described with a custom teardrop shape that contours to the breast and are said to remain flexible when frozen for easier shaping and placement.
Each package contains two pieces—for both the breast warmers and the refreezable ice pucks.
Search results show two primary product types: 2‑in‑1 breast therapy packs (usable hot or cold) and refreezable ice pucks designed for portable breastmilk coolers.