Mammut Publishes 2025 Sustainability Report, Marking Shift to Largely PFAS-Free Products

Swiss outdoor brand Mammut has reached a major milestone in its sustainability strategy: since the Autumn/Winter 2025/2026 collection, all of its clothing, accessories, sleeping bags, climbing harnesses, shoes, backpacks, and bags have been produced without intentionally added PFAS. The company detailed the achievement in its newly published 2025 sustainability report.

Mammut is careful to describe the change as eliminating "intentionally added" PFAS, since trace amounts can still turn up unintentionally — through residue in manufacturing equipment, supply chain processes, or the broader presence of PFAS in the environment. Ropes remain the one product category not yet fully phased out, though 75 percent of ropes in the 2025/2026 collection were already made without intentionally added PFAS.

PFAS are synthetic fluorinated compounds that have long been used across the outdoor industry for their water-, dirt-, and grease-repellent properties. But the chemicals barely break down in the environment and are considered harmful to both ecological and human health, prompting the European Union to move toward banning them.

Mammut says it has been developing alternatives to PFAS since 2016. CEO Heiko Schäfer said the company has made meaningful progress but acknowledged that sustainability work is growing more complex and data-intensive, with significant work still ahead.

Climate Targets and Emissions

Beyond the PFAS phase-out, the report outlines other sustainability developments. The Science Based Targets initiative has validated both Mammut's short-term 2030 climate targets and its 2050 net-zero target under the Corporate Net Zero Standard. The company's estimated carbon footprint for 2025 came in at 76,712 tonnes of CO2 equivalent — a figure that rose compared with the newly recalculated prior-year number, which Mammut attributed to company growth and updated calculation methods.

Repair and Circularity Efforts

The report also highlights the company's repair and circular economy initiatives. Mammut said it extended the lifespan of approximately 15,270 products through repairs in 2025, while around 79,000 garments were made using leftover materials. Production waste from rope manufacturing was also repurposed through the company's "LoopInsulation" process.

Mammut pointed to partnerships supporting its broader sustainability strategy, including its collaboration with the climbing-focused nonprofit ClimbAID, along with its memberships in the Fair Wear Foundation and Bluesign.