From the manufacturer:
MUSEUM Sticky Putty is a white reusable putty adhesive.
This putty is excellent for securing figurines, collectibles, vases, computer speakers, ornaments and other 3-D objects.
Sticky Putty comes in an easy-access sleeve that keeps the product clean and dust-free until you're ready to use it. It will not dry out and remains sticky and re-usable for an extended period of time. A single blob the size of a quarter will hold 10 oz on a wall.