This piece digs into the claims from fast fashion giants like H&M, Zara, and Shein that they are moving toward sustainability. While they tout high percentages of sustainably sourced materials, their total production volumes and waste numbers tell a different story. For example, H&M reported 91% sustainably sourced materials but created 364,093 metric tons of products in 2025, and Inditex's material use actually rose year over year. The core issue: per-unit improvements don't offset total growth when the business model depends on pushing massive quantities of cheap clothing. Experts interviewed argue that the fast fashion model is inherently difficult to make sustainable. Quick response supply chains move waste upstream, and even recycled fibers can be less durable, shortening product life. The article also highlights transparency gaps, as brands report waste from their own operations but not from the supply chain, leaving hundreds of thousands of tonnes unaccounted for. For anyone tracking corporate climate claims, this is a useful case study on why absolute reductions matter more than percentage-based achievements.
