Allbirds Women’s Merino Wool Runner Sustainable Natural Black Sole Sneakers 9. Soft itch-free inside, durable outside, & ethically sourced to ZQ Merino’s high standards for cozy fit that treads light on the planet. Contoured bouncy Brazilian sugarcane midsole w/ world’s first carbon negative green EVA. Castor bean oil, which emits less carbon than petroleum-based foam, is layered w/ wool for cushiony, moisture wicking, & odor reducing insole. Available in whole sizes, size up if in-between. GReat pre-owned condition. Note wear to inner heel, replaceable insole, & bottom.. Smoke/pet free home. Offers welcome. Bundle & save. Ship same/next day. Packaged w/ care.