Provided is an article using an FRP, the article having improved at least one of vibration damping, acoustic properties, and toughness. An article having a layer of a polymer composition, between the first fiber-reinforced plastic layer and the second fiber-reinforced plastic layer, wherein the polymer composition has a Tandelta of 0.2 or more in 20 dege Scientific in the entire range between frequencies 100 Hz and 4,000 Hz. A method of making an article, comprising the steps of: Laminating a first pre-preg and a second pre-preg via a sheet of a polymer composition having a Tandelta of 0.2 or more in 20 dege Scientific in the entire range between a frequency of 100 Hz and a 4,000 Hz; and heating and pressurizing. Figure 1

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