The product is of good quality, the 3M double sided adhesive used is effective, plasticized red and white coating is flexible enough not to damage upon impact of amortization. The foam is used for both dense and flexible by its reduced thickness, the product is cut in the corner to allow folding and gluing on an angular wall whatever the angle (0 to 90 °). Beware dimensions are those given in the product, mails should be the unit is specified. It measures 40 x L l + l + 7.5 ep 7.5 x 1.5 cm (so it corresponds to 400 x 75 + 75 x 15 as shown ... but specify measure, these are mm! ) Since the other details of the product other Amazon "Product sizes" are who have nothing to do: is it packing size, I do not know, but it is disturbing ...