Brand Rating
Frank Green
Australian brand making reusable coffee cups and water bottles with a patented one-touch lid mechanism. Ceramic-lined stainless steel, dishwasher safe. The design is genuinely functional and the cups have strong brand recognition. The downsides: expensive (£25-35 for a cup), the ceramic lining can chip over time, and the market is saturated. Good for "best reusable coffee cup" roundups.
70/100
Hummlan Sustainability Score
70
out of 100
Sustainability Breakdown
No formal biodiversity programme; stainless/cobalt supply chain.
Durable, dishwasher-safe, repairable with spare parts and lid replacements — designed for years of use.
Reusable drinkware displaces single-use cups; carbon-neutral claims run via partners; no published footprint or targets.
Ceramic-lined stainless avoids plastic leachates; steel manufacturing footprint not fully disclosed.
Ethical manufacturing claims but no third-party certification (not B Corp); limited supply chain transparency.
Our ratings are "stern but fair", based on third-party certifications and EU Taxonomy + CSRD alignment. We prioritize verifiable data over brand marketing claims. EU Taxonomy and CSRD explain the framework backbone.
Frank Green Products We Track
Our ratings are "stern but fair", based on third-party certifications and EU Taxonomy + CSRD alignment. Learn more about EU Taxonomy and CSRD.