Allbirds Trailrunner SWT Women's & Men's Sneakers (Deep Emerald/Buoyant Mint)

TENCEL™ lyocell (from eucalyptus tree fiber) and ZQ-certified merino wool blend uppers
Snug, socklike collars block debris
Durable water repellent (DWR) finish helps keep the shoes from getting soggy
Shoelaces are made from recycled plastic bottles
Bio-based nylon eyelets
Bio-based TPU seam tape and heel counters
Tear-resistant ripstop mudguards help protect your feet from rough terrain
ZQ-certified merino wool and recycled polyester ripstop linings
ZQ-certified merino wool heel linings
Insoles are made with castor bean oil–based foam
SweetFoam® midsoles are made with sugarcane-based EVA
Heel stack height: 25 mm; forefoot stack height: 18 mm; heel-to-toe drop: 7 mm
Natural rubber outsoles have 4 mm multidirectional treads for added grip