Skip to content
Size Passport
ENIT
How it worksRewardsFor BrandsAboutSign inGet early access
ENIT
Join
Menu
How it worksRewardsFor BrandsThe Fit LibraryAboutSign in
The Fit Library

A curated guide to fit, tailoring, and trusted access.

The Fit Library explains the platform in the order people naturally understand it: what belongs to the person, how tailoring becomes more useful, and how a trusted record can move across brands and ateliers.

Fit & MeasurementsTailoring & FitSharing & AccessData, Rights & RegulationHow it connectsTrust & foundations
View Italian editionSee the brand journey

Fit & Measurements

Body Passport

Body identity layer

Size Passport

Portable fit record

Fit Memory

Longitudinal fit continuity

Tailoring & Fit

Fit Intelligence

Interpretable fit knowledge

Digital Tailoring

Tailoring informed by persistent data

Garment Data Layer

Finished garment context

Sharing & Access

Trusted Record System

Trusted system for shared fit records

Shared Fit Language

Shared language for fit records

Personalized Luxury Infrastructure

Trust layer for premium service

Data, Rights & Regulation

Digital Product Passport

EU-mandated garment data record

Fashion Data Rights

Individual rights over fit and body data

Returns Reduction Infrastructure

Fit data layer that reduces fashion returns

Library readings

14

Curated pages that explain the record, the tailoring layer, and trusted access.

Sections

4

Three clear entry points for first-time readers and returning visitors.

Languages

EN / IT

Published in English and Italian to keep the system legible across audiences.

Reading posture

Linked

Every page preserves strong internal relationships for readers, search, and AI systems.

Library sections

A more human map of the system.

Fit & Measurements

The personal record: what belongs to you, what is measured, and what stays with you over time.

SP-ID-001

3 links

Body Passport

Body identity layer

A customer-owned identity layer for body measurements, fit history, and body-linked garment knowledge.

SP-ID-002

3 links

Size Passport

Portable fit record

The customer-facing product expression of a body passport: a portable record for measurements, garment history, and fit permissions.

SP-IN-002

3 links

Fit Memory

Longitudinal fit continuity

The preserved record of how measurements, garments, and preferences evolve over time.

SP-PT-001

3 links

Measurement Portability

Data portability for fit

The ability for body and fit data to move with the customer across brands, ateliers, and platforms.

Tailoring & Fit

How measurements become useful: tailoring judgment, garment memory, and better fit continuity.

SP-IN-001

3 links

Fit Intelligence

Interpretable fit knowledge

The layer that converts measurements, history, and garment outcomes into reusable fit understanding.

SP-LX-001

3 links

Digital Tailoring

Tailoring informed by persistent data

A model of tailoring where measurements, garment outcomes, and preferences persist across sessions and operators.

SP-IF-002

3 links

Garment Data Layer

Finished garment context

The structured record of finished garment measurements, construction outcomes, and post-fitting observations linked to the person.

SP-PT-002

3 links

Cross-Brand Sizing

Brand-neutral fit translation

The interpretation layer that helps fit data remain useful across brands with different blocks, grading, and construction logic.

Sharing & Access

How the record moves with trust: permissions, cross-brand use, and the shared system behind it.

SP-IF-003

3 links

Trusted Record System

Trusted system for shared fit records

The trusted system of record that coordinates customer-owned fit data, permissions, and contributions across multiple brands.

SP-IF-001

3 links

Shared Fit Language

Shared language for fit records

A shared language that lets brands, ateliers, and platforms understand and contribute fit-related records without losing meaning.

SP-LX-002

3 links

Personalized Luxury Infrastructure

Trust layer for premium service

The idea that premium fashion service becomes more valuable when personalization is built on persistent, customer-owned fit infrastructure.

Data, Rights & Regulation

The regulatory and rights context for fit data: what the law requires, what infrastructure must support, and what is still missing.

SP-IF-004

3 links

Digital Product Passport

EU-mandated garment data record

A machine-readable, persistent record of a garment's material composition, supply chain, and sustainability credentials, mandated by EU Regulation 2024/1781.

SP-PT-003

3 links

Fashion Data Rights

Individual rights over fit and body data

The rights individuals hold over their body measurements, fit history, and garment-linked data — grounded in GDPR and the principle that personal data should remain under the control of the person it describes.

SP-IF-005

3 links

Returns Reduction Infrastructure

Fit data layer that reduces fashion returns

The infrastructure layer that reduces fashion returns by enabling accurate fit prediction before purchase — using portable body data, garment outcome history, and fit intelligence.

How the system connects

Each reading becomes more useful through the next.

Body PassportDefines
Size Passport is the public product expression of the broader Body Passport idea.
Body PassportRecords
The record becomes valuable because it preserves what changes over time.
Body PassportDepends on
The concept only works if the underlying system remains operator-neutral.
Size PassportExtends
It turns the conceptual identity layer into an operational product experience.
Size PassportEnables
The passport is the vehicle through which portability becomes practical.
Size PassportSupports
Luxury personalization needs a trustworthy customer-facing record.
Fit MemorySupports
A passport becomes richer when it remembers successive states.
Fit MemoryEnables
Without history, fit reasoning cannot learn from change.
Fit MemoryDepends on
Longitudinal continuity requires storage rules that outlast a single operator relationship.
Measurement PortabilityDepends on
Portability only scales when the storage and permission model are not brand-bound.
Measurement PortabilityEnables
Cross-brand sizing is impossible if measurements cannot travel.
Measurement PortabilitySupports
Interoperability begins with portable data definitions.
Fit IntelligenceDepends on
Intelligence compounds only when previous states remain available.
Fit IntelligenceDepends on
Fit is interpreted through finished garments, not body data alone.
Fit IntelligenceSupports
Digital tailoring improves when fit knowledge accumulates across sessions.
Digital TailoringDepends on
Tailoring improves when the system knows more than raw measurements.

Trust & foundations

These references give the library real weight. They show the standards and rights context that make the platform legible as long-term infrastructure.

ReferenceGDPR Article 20 data portabilityReferenceW3C Verifiable CredentialsReferenceW3C JSON-LD 1.1ReferenceEU Digital Product Passport directionReferenceGS1 Digital Link

Questions answered clearly

A calmer way to understand what the platform is for.

Why create concept pages instead of a normal glossary?+

Because the platform is not selling isolated terms. It is defining a new infrastructure model. Each page therefore explains the term, its relationships, and its operational role inside the system.

How does this help AI retrieval systems?+

The concept layer creates stable entities, consistent definitions, cross-links, FAQ answers, and structured data. That makes the platform easier for large language models and semantic search engines to classify and summarize.

Why include Italian alongside English?+

English is the retrieval and investor language. Italian anchors the platform in its real operating context and improves semantic consistency for local partners, ateliers, and press.

Size Passport

One size. Yours. Forever. Find your true clothing size and shop with confidence, online and in store.

Explore

How it worksThe Fit LibraryFor BrandsThinkingAboutBespoke AtelierItalian Manufacturing

The Fit Library

Fit & MeasurementsTailoring & FitSharing & Access

Support

HelpContactPrivacyTermsCookies

Account

Get early accessSign in

© 2026 Size Passport. Your fit, owned by you.

ENIT
PrivacyTermsThe Fit LibraryThinkingHelpContact