Saucony Shadow 5000 Mushroom. We don't talk about mushrooms enough when it comes to sustainability. Let's start. Using a 95% bio-based formula that's sourced from the fleshy fungus, it's the perfect alternative in this exclusive pack. Hemp-based content, recycled laces, cork footbeds, and other materials make each shoe all the more worthwhile. In addition to this, more conscious materials such as recycled laces have been used, whilst muted, earthy tones ensure the vegan sneakers still feel elevated.