Review on 🩹 Highly Absorbent Dimora Foam Dressing Pads, 10cmx10cm, Pack of 10 - Sterile Non-Adhesive Hydrophilic Square Waterproof Dressing for Optimal Wound Care by Cameron Aleman

I guess I didn't pay enough attention to the product page, I thought it was some kind of bandage but they don't stick. Goods correspond to the description. Foam pillow, mine measures 3.9 inches and is 0.19 inches thick. It is flexible and soft, like a makeup sponge. There is a waterproof barrier on one side which should work fine if you tape seal/glue the sides.