Allbirds vs Karst
An independent side-by-side ethics comparison of Allbirds and Karst across certifications, average sustainability score and product range.
Allbirds
90.7/100 avg ethics
13 products tracked
Certifications
Karst
Higher score93.3/100 avg ethics
3 products tracked
Certifications
Top Allbirds products
A high-performance running shoe made from eucalyptus tree fibers and sugarcane-based foam, prioritizing carbon neutrality and renewable materials.
An eco-engineered sneaker made from responsibly sourced eucalyptus tree fibers. Renowned for comfort and a carbon-neutral footprint, these shoes represent the pinnacle of regenerative material science in footwear.
A high-performance running shoe crafted from carbon-neutral eucalyptus fiber and sugarcane-based foam, optimized for workouts and everyday wear.
A breathable, carbon-neutral everyday sneaker made from FSC-certified eucalyptus tree fiber and sugarcane-based EVA foam.
A carbon-neutral performance running shoe made from eucalyptus fiber and sugarcane-based foam.
A high-performance running shoe built with eucalyptus fiber and sugarcane-based foam. Allbirds leads the industry in carbon labeling and material transparency.
Top Karst products
Revolutionary 'stone paper' notebooks made without water, trees, or bleach, providing a waterproof and tear-resistant writing surface.
A revolutionary tree-free notebook made from repurposed calcium carbonate (stone) instead of wood pulp, using significantly less water and energy in production.
A revolutionary waterproof notebook made entirely from recycled stone waste instead of trees, utilizing zero water or bleach during production.
Frequently asked: Allbirds vs Karst
Which is more ethical, Allbirds or Karst?+
Karst scores higher on independent ethics scoring: Allbirds averages 90.7/100 vs Karst at 93.3/100.
Which has more certifications?+
Allbirds appears with 9 verified certifications (B Corp, FSC Certified, Climate Neutral, Regenerative Organic, 1% for the Planet). Karst appears with 4 (B Corp, Cradle to Cradle, Climate Neutral, 1% for the Planet).
Are these scores independent?+
Yes. Both brands are scored by the same methodology — never paid placement. See our methodology page for the weighting.