Leather sourced from a tannery that achieved a Silver Rating from the Leather Working Group (LWG). Known as the non-sneaker sneaker, like your favorite flat and actually comfortable, the Jibs Slim style is everything you love about a classic slip-on shoe with a super stylish, day-to-night fashion that goes everywhere and feels great. Great for fashionable lightweight travel and all-day walking adventures. Handmade for the highest quality. Perforated biodegradable leather upper. Memory foam natural cork insole. Traction rubber outsole. This product is considered sustainable because it's been certified by one or more industry certifying organization for meeting at least one industry standard for environmental or socioeconomic impact. Made in Brazil. Weight of footwear is based on a single item, not a pair.