1. An upper for an article of footwear, the upper comprising:a knitted component formed of unitary knit construction,
the knitted component comprising a first knitted layer and a second knitted layer that are at least partially coextensive with each other,
the first knitted layer comprising a first yarn comprising a thermoplastic polymer material, the second knitted layer comprising a second yarn comprising a second material,
wherein a melting temperature of the thermoplastic polymer material is at least five degrees celsius lower than a melting temperature of second material; and
a component secured to the knitted component.