An independent side-by-side ethics comparison of Mammut and Niswi Sisters across certifications, average sustainability score and product range.
78/100 avg ethics
1 products tracked
Certifications
91/100 avg ethics
1 products tracked
Certifications

A high-performance climbing shoe made from vegan materials and recycled rubber, designed for both gym and crag. Its construction uses no gluten-containing components, making it safe for gluten-free households. The shoe features a precision fit and durable edge, while prioritising ethical production through Mammut’s B Corp certification and recycled content.

Handcrafted by Anishinaabe artisans, these small accessories utilize ethically harvested shells and traditional materials to promote spiritual grounding.
Niswi Sisters scores higher on independent ethics scoring: Mammut averages 78/100 vs Niswi Sisters at 91/100.
Mammut appears with 4 verified certifications (Vegan, Cruelty-Free, Global Recycled Standard, B Corp). Niswi Sisters appears with 3 (Cruelty-Free, PETA Approved, Global Recycled Standard).
Yes. Both brands are scored by the same methodology — never paid placement. See our methodology page for the weighting.