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.
Our ratings are "stern but fair", based on third-party certifications and EU Taxonomy + CSRD alignment. Hummlan does not sell products and earns nothing from recommending brands — ratings are independent. Learn more about EU Taxonomy and CSRD.