Veja is a French footwear brand known for its commitment to sustainability and ethical practices in the production of sneakers. While I don't have specific information about a "Sustainable Sneakers" campaign by Veja, their entire brand identity and product line are built around the concept of sustainable and eco-friendly sneakers.

Key aspects of Veja's approach to sustainability in their sneakers include:

1. Ethical Sourcing: Veja is known for using environmentally friendly materials and sourcing them ethically. This includes organic cotton, sustainably harvested rubber, and leather sourced from responsible suppliers.

2. Transparency: The brand emphasizes transparency in their production processes, from sourcing materials to manufacturing. They aim to provide customers with clear information about the origin and impact of their products.

3. Minimalist Design: Veja sneakers often feature minimalist and timeless designs that prioritize longevity and versatility.

4. Fair Labor Practices: Veja is committed to fair labor practices and collaborates with factories that pay fair wages and provide safe working conditions for their employees.

5. Eco-Friendly Packaging: The brand also focuses on reducing waste by using eco-friendly packaging materials.

While I do not have information about a specific campaign, Veja's overall marketing and messaging revolve around their commitment to sustainability, making it a core aspect of their brand identity. They often highlight the environmental and ethical benefits of choosing Veja sneakers.

For the most up-to-date information about Veja's campaigns and sustainable sneaker offerings, we'd recommend visiting their official website or checking their latest marketing materials and announcements. Keep in mind that their campaigns and initiatives did have evolved or changed since my last knowledge update in 2021.