Sustainability is no longer a nice-to-have for brands; it’s become one of the biggest factors shaping how customers choose products and how businesses protect their bottom line. More than 80% of shoppers now say they want sustainable packaging, up sharply from around 64% just a few years ago, and over half of surveyed U.S. consumers say they’ve deliberately chosen a product because of its sustainable packaging within the past six months. For businesses trying to balance branding, cost, and environmental responsibility, eco-friendly custom packaging has moved from a marketing extra to a core business decision. This guide breaks down exactly what it is, why it matters, and how it benefits your brand, your customers, and the planet.