Higg Index

Key takeaways

Higg Index belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Higg Index to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Higg Index from memory before moving on to harder problems.

Reference excerpt

The Higg Index is a suite of tools to rate environmental and social sustainability throughout the supply chain. It was initially launched by the Sustainable Apparel Coalition in 2012. However, in 2024, the Sustainable Apparel Coalition rebranded as Cascale to reflect its expanded focus beyond the apparel sector and into other adjacent categories. The nonprofit consists of more than 300 fashion brands, retailers, manufacturers, academic institutions, affiliates, NGOs and governments. While initially formed to create standardized sustainability metrics, Cascale has since sharpened its focus to driving pre-competitive, collective action across three foundational pillars: "Combat Climate Change", "Decent Work for All", and a "Nature-Positive Future". This is outlined in its "Evolution for Impact" strategic plan, revised in 2023. As of 2026, more than 45,000 facilities across 97 countries use the Higg Index tools through the Worldly platform. However, the Higg Index has been criticized by some for using poor data and a non-transparent approach resulting in potentially misleading information on which fiber is more sustainable.

Overview Worldly, a software company that develops supply chain management and sustainability reporting software operates as the platform for the Higg Index suite of tools, which Cascale develops and owns. Walmart and Patagonia founded Cascale (SAC) in 2009 with the goal of convening stakeholders across the industry on a pre-competitive basis to develop a common approach to measuring sustainability. The nonprofit's members include brands producing apparel or footwear; retailers; industry affiliates and trade associations; the U.S. Environmental Protection Agency, academic institutions and environmental nonprofits, among others. The Higg Index provides a suite of five tools to assess sustainability throughout a product's entire life cycle, from materials to end-of-life. The metrics created Higg Index are limited to a company's internal use for the evaluation and improvement of environmental performance. As of 2012, plans for a future version included a scoring scale to communicate a product's sustainability to consumers and other stakeholders. As of 2023, the Higg Index Suite of Tools included the Higg Facility Environmental Module (FEM), Higg Facility Social & Labor Module (FSLM), Higg Brand & Retail Module (BRM), Higg Materials Sustainability Index (MSI), and Higg Product Module (PM). While Higg Index metrics support internal evaluation and improvement, they are not limited to only internal use. Assessment results can be shared with supply chain partners or publicly for greater transparency and to satisfy corporate sustainability reporting requirements, including mandatory disclosures under the EU's Corporate Sustainability Reporting Directive (CSRD) and Integrated Reporting (IR) frameworks that increasingly incorporate Higg data into Annual Reports (AR) and comprehensive sustainability communications.

History The Higg Index was adapted from two previously existing sustainability measurement standards: the Nike Apparel Environmental Design Tool and the 2007 Eco Index created by the Outdoor Industry Association, the European Outdoor Group and the Zero Waste Alliance. The Eco Index had been created by a group of outdoor companies including REI, MEC, Patagonia, Outdoor Research and others starting in 2007. Leaders of the group at this time included Kevin Myette, Greg Scott, Ammi Borenstein, Peter Girard, Nick Sterling and many others. After 2–3 years of independent work the Eco Index was adopted by the Outdoor Industry Association and ultimately became a core component of the Higg Index. The SAC was established as brands and retailers sought to self-regulate on environmental and sustainability issues. Version 1.0 of the Higg Index was made public in July 2012. According to the Coalition's Executive Director in 2012, the name "Higg" was inspired by the Higgs Boson search. The name Higg also met other key criteria: it was short, easy to pronounce and was able to clear trademark registration in 120 countries. In its first iteration, Higg Index metrics focus on environmental factors in the apparel supply chain. As of 2013, Metrics pertaining to footwear as well as labor and social sustainability were planned for a future release. On 11 December 2013, an updated version of the Higg Index was released. In October 2015, the Sustainable Apparel Coalition announced the launch of the Social Labor and Convergence Project, which seeks to establish a uniform standard for auditing labor conditions and social impact in the apparel and footwear industries. In August 2025, GreenStitch a climate tech company focused on fashion launched AI powered Higg Analyser to help Higg users to analyse gaps in their reporting and improve scores.

… excerpt ends here. Continue reading the full article.

Illustrations

Higg Index Logo

Worked examples

Example 1 — a first encounter with Higg Index

Start with the simplest possible case. Write down what Higg Index claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Higg Index before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Higg Index ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Higg Index

In research: Higg Index appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Higg Index in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Higg Index is common in secondary-school and first-year university syllabi. It links to neighbouring topics Clothing and the environment, Environmental indices, Eponymous indices, so understanding it makes those chapters shorter.
In everyday life: Look for Higg Index outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Higg Index in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Higg Index means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Higg Index out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Higg Index in simple terms?

The Higg Index is a suite of tools to rate environmental and social sustainability throughout the supply chain. It was initially launched by the Sustainable Apparel Coalition in 2012.

Why does Higg Index matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Higg Index?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Higg Index.