diff --git a/examples/abstractModel.ts b/examples/abstractModel.ts
new file mode 100644
index 0000000..cdf2dbb
--- /dev/null
+++ b/examples/abstractModel.ts
@@ -0,0 +1,160 @@
+import genRoute, { app } from "./webserver";
+import { createPass, createAbstractModel, AbstractModel } from "..";
+
+let abstractModel: AbstractModel;
+
+(async () => {
+	abstractModel = await createAbstractModel({
+		model: `./models/exampleBooking.pass`,
+		certificates: {
+			wwdr: "../certificates/WWDR.pem",
+			signerCert: "../certificates/signerCert.pem",
+			signerKey: {
+				keyFile: "../certificates/signerKey.pem",
+				passphrase: "123456"
+			}
+		},
+		// overrides: request.body || request.params || request.query,
+	});
+})();
+
+genRoute.all(async function manageRequest(request, response) {
+	const passName = request.params.modelName + "_" + (new Date()).toISOString().split('T')[0].replace(/-/ig, "");
+
+	try {
+		const pass = await createPass(abstractModel);
+
+		pass.transitType = "PKTransitTypeAir";
+
+		pass.headerFields.push({
+			"key": "header1",
+			"label": "Data",
+			"value": "25 mag",
+			"textAlignment": "PKTextAlignmentCenter"
+		}, {
+			"key": "header2",
+			"label": "Volo",
+			"value": "EZY997",
+			"textAlignment": "PKTextAlignmentCenter"
+		});
+
+		pass.primaryFields.push({
+			key: "IATA-source",
+			value: "NAP",
+			label: "Napoli",
+			textAlignment: "PKTextAlignmentLeft"
+		}, {
+			key: "IATA-destination",
+			value: "VCE",
+			label: "Venezia Marco Polo",
+			textAlignment: "PKTextAlignmentRight"
+		});
+
+		pass.secondaryFields.push({
+			"key": "secondary1",
+			"label": "Imbarco chiuso",
+			"value": "18:40",
+			"textAlignment": "PKTextAlignmentCenter",
+		}, {
+			"key": "sec2",
+			"label": "Partenze",
+			"value": "19:10",
+			"textAlignment": "PKTextAlignmentCenter"
+		}, {
+			"key": "sec3",
+			"label": "SB",
+			"value": "Sì",
+			"textAlignment": "PKTextAlignmentCenter"
+		}, {
+			"key": "sec4",
+			"label": "Imbarco",
+			"value": "Anteriore",
+			"textAlignment": "PKTextAlignmentCenter"
+		});
+
+		pass.auxiliaryFields.push({
+			"key": "aux1",
+			"label": "Passeggero",
+			"value": "MR. WHO KNOWS",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "aux2",
+			"label": "Posto",
+			"value": "1A*",
+			"textAlignment": "PKTextAlignmentCenter"
+		});
+
+		pass.backFields.push({
+			"key": "document number",
+			"label": "Numero documento:",
+			"value": "- -",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "You're checked in, what next",
+			"label": "Hai effettuato il check-in, Quali sono le prospettive",
+			"value": "",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "Check In",
+			"label": "1. check-in✓",
+			"value": "",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "checkIn",
+			"label": "",
+			"value": "Le uscite d'imbarco chiudono 30 minuti prima della partenza, quindi sii puntuale. In questo aeroporto puoi utilizzare la corsia Fast Track ai varchi di sicurezza.",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "2. Bags",
+			"label": "2. Bagaglio",
+			"value": "",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "Require special assistance",
+			"label": "Assistenza speciale",
+			"value": "Se hai richiesto assistenza speciale, presentati a un membro del personale nell'area di Consegna bagagli almeno 90 minuti prima del volo.",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "3. Departures",
+			"label": "3. Partenze",
+			"value": "",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "photoId",
+			"label": "Un documento d’identità corredato di fotografia",
+			"value": "è obbligatorio su TUTTI i voli. Per un viaggio internazionale è necessario un passaporto valido o, dove consentita, una carta d’identità.",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "yourSeat",
+			"label": "Il tuo posto:",
+			"value": "verifica il tuo numero di posto nella parte superiore. Durante l’imbarco utilizza le scale anteriori e posteriori: per le file 1-10 imbarcati dalla parte anteriore; per le file 11-31 imbarcati dalla parte posteriore. Colloca le borse di dimensioni ridotte sotto il sedile davanti a te.",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "Pack safely",
+			"label": "Bagaglio sicuro",
+			"value": "Fai clic http://easyjet.com/it/articoli-pericolosi per maggiori informazioni sulle merci pericolose oppure visita il sito CAA http://www.caa.co.uk/default.aspx?catid=2200",
+			"textAlignment": "PKTextAlignmentLeft"
+		}, {
+			"key": "Thank you for travelling easyJet",
+			"label": "Grazie per aver viaggiato con easyJet",
+			"value": "",
+			"textAlignment": "PKTextAlignmentLeft"
+		});
+
+		const stream = pass.generate();
+		response.set({
+			"Content-type": "application/vnd.apple.pkpass",
+			"Content-disposition": `attachment; filename=${passName}.pkpass`
+		});
+
+		stream.pipe(response);
+	} catch(err) {
+		console.log(err);
+
+		response.set({
+			"Content-type": "text/html"
+		});
+
+		response.send(err.message);
+	}
+});
diff --git a/src/abstract.ts b/src/abstract.ts
new file mode 100644
index 0000000..7f76d15
--- /dev/null
+++ b/src/abstract.ts
@@ -0,0 +1,63 @@
+import { Certificates, FinalCertificates, PartitionedBundle, OverridesSupportedOptions, FactoryOptions } from "./schema";
+import { getModelContents, readCertificatesFromOptions } from "./parser";
+import formatMessage from "./messages";
+
+const abmCertificates = Symbol("certificates");
+const abmModel = Symbol("model");
+const abmOverrides = Symbol("overrides");
+
+export interface AbstractFactoryOptions extends Omit<FactoryOptions, "certificates"> {
+	certificates?: Certificates;
+}
+
+interface AbstractModelOptions {
+	bundle: PartitionedBundle;
+	certificates: FinalCertificates;
+	overrides?: OverridesSupportedOptions;
+}
+
+export async function createAbstractModel(options: AbstractFactoryOptions) {
+	if (!(options && Object.keys(options).length)) {
+		throw new Error(formatMessage("CP_NO_OPTS"));
+	}
+
+	try {
+		const [bundle, certificates] = await Promise.all([
+			getModelContents(options.model),
+			readCertificatesFromOptions(options.certificates)
+		]);
+
+		return new AbstractModel({
+			bundle,
+			certificates,
+			overrides: options.overrides
+		});
+	} catch (err) {
+		console.log(err);
+		throw new Error(formatMessage("CP_INIT_ERROR", "abstract model", err));
+	}
+}
+
+export class AbstractModel {
+	private [abmCertificates]: FinalCertificates;
+	private [abmModel]: PartitionedBundle;
+	private [abmOverrides]: OverridesSupportedOptions;
+
+	constructor(options: AbstractModelOptions) {
+		this[abmModel] = options.bundle;
+		this[abmCertificates] = options.certificates,
+		this[abmOverrides] = options.overrides
+	}
+
+	get certificates(): FinalCertificates {
+		return this[abmCertificates];
+	}
+
+	get bundle(): PartitionedBundle {
+		return this[abmModel];
+	}
+
+	get overrides(): OverridesSupportedOptions {
+		return this[abmOverrides];
+	}
+}