Allbirds Heathered Gray Wool Runners W9

Comfort. They are made from responsibly sourced ZQ Merino wool, known for its softness, warmth, breathability, and odor-minimizing properties. Comfort & Support: The Wool Runners feature a sugarcane-based SweetFoam® midsole for cushioned support, making them comfortable for all-day wear and walking. Sustainability: Allbirds emphasizes sustainable practices, using eco-friendly materials and aiming to reduce carbon emissions in their production. Care: These shoes are machine washable (remove insoles and laces first).