Custom eco-friendly shipping boxes are typically made from the following materials:

1. Recycled Cardboard: Strong, durable, and fully recyclable, making it an ideal choice for sustainable packaging.

2. Kraft Paper: Known for its natural brown color, kraft paper is biodegradable and often used for its rustic appeal.

3. Corrugated Fiberboard: Composed of multiple layers of recycled paper, this material offers excellent protection and is widely used in eco-friendly designs.

4. Bamboo: A rapidly renewable resource that provides a unique and eco-conscious option for custom boxes.

5. Mushroom Packaging: Made from mycelium (mushroom roots), this innovative material is fully compostable and gaining popularity as an alternative to traditional plastics.

These materials not only ensure product safety during transit but also align with environmentally friendly practices, appealing to eco-conscious consumers.