Double sided adhesive foam tape squares, made by 3M.

20 pieces of 25mm x 25mm (1 inch) square shapes.

Made of a thin (1mm) flexible foam with adhesive on both sides.

There is backing paper on both sides which needs to be peeled off to expose the sticky surface before use.

Ideal for fastening things to a surface e.g. fastening posters securely to a wall, securing your phone or satnav to the car dashboard, fixing your ornaments to a shelf

Genuine 3M tape, not a cheaper (or weaker) alternative.