Isikhumba se-Napa senziwe ngesikhumba senkomo esimsulwa, esenziwe ngesikhumba sokusanhlamvu senkunzi, sishukwe ngezinto zokushukwa kwemifino kanye nosawoti we-alum. Isikhumba seNappa sithambile kakhulu futhi sithungwe, futhi ubuso baso bubucayi kakhulu futhi buswakama uma uthintwa. Ikakhulukazi isetshenziselwa ukwenza imikhiqizo ethile yezicathulo nezikhwama noma izimpahla zesikhumba ezisezingeni eliphezulu, njengengaphakathi lezimoto ezisezingeni eliphezulu, osofa abasezingeni eliphezulu, njll. ukhululekile ukuhlala futhi unomuzwa wokuguqa.
Isikhumba saseNappa sithandwa kakhulu ngezihlalo zemoto. Kuyinto stylish and nenhle, ingasaphathwa ntofontofo futhi isikhathi eside. Ngakho-ke, abathengisi abaningi bezimoto abanaka kakhulu ikhwalithi yangaphakathi bazoyithatha. Izihlalo zesikhumba zaseNappa kulula ukuzihlanza ngenxa yenqubo yazo yokudaya nokubukeka kwejazi elikhanyayo. Akukhona nje ukuthi uthuli lusulwa kalula, futhi alumumbi amanzi noma uketshezi ngokushesha futhi lungahlanzwa ngokusula indawo engaphezulu ngokushesha. Ngaphezu kwalokho, futhi okubalulekile, futhi i-hypoallergenic.
Isikhumba seNapa sazalwa okokuqala ngo-1875 eSawyer Tannery Company eNapa, eCalifornia, eU.SA. Isikhumba se-Napa asiguquliwe noma isikhumba senkonyane esishintshwe kancane noma sewundlu sishukwa ama-ejenti okushuka kwemifino kanye nosawoti we-alum. Inqubo yokukhiqiza iseduze nokukhiqizwa kwemvelo okumsulwa, okungenayo iphunga nokuphatheka kabi okubangelwa imikhiqizo yamakhemikhali. Ngakho-ke, ungqimba lokuqala oluthambile noluthambile lwesikhumba sangempela olukhiqizwa inqubo yokushukwa kweNappa lubizwa nge-Nappa leather (Nappa), futhi le nqubo ibizwa nangokuthi inqubo yokushuka kweNappa.