Allbirds Tree Runner NZ - Men's

Elevate your everyday sneaker with a clean, modern silhouette built for comfort and sustainability. The Tree Runner NZ blends refined style with materials designed to feel both light and grounded—perfect for daily wear, travel, and beyond.

Upper & Materials

• The upper features Allbirds’ “Tree Knit” made with TENCEL™ Lyocell (tree fibre) blended with recycled polyester, offering a breathable, airy feel that keeps your feet fresh and cool. 

• The design maintains a minimalist aesthetic, with subtle texture from the knit and a sleek profile suited for many occasions.

Midsole & Comfort

• Equipped with the signature SweetFoam® midsole, redesigned with an upgraded under-foot contour (10.2 mm forefoot / 20.0 mm heel) to deliver smoother, more supportive strides. 

• Inside, there’s a dual-density “Featherbed” insole featuring memory-foam cushioning paired with a wool-blend sockliner, giving plush comfort for long periods of wear. 

• The collar and tongue lining include a wool-blend for a soft, supportive feel at key contact points. 

Design & Fit

• The “NZ” moniker nods to Allbirds’ New Zealand heritage while also signaling a refreshed version of their fan-favourite Tree Runner model. 

• The fit runs true to size for most, though as with many knit-upper casual sneakers, you may prefer trying on if you’re between sizes or have wider feet.

• With its streamlined silhouette and neutral to bold color options, the sneaker works equally well with jeans, casual dresses, or travel outfits.

Sustainability & Ethos

• Materials are chosen with environmental impact in mind: tree fiber uppers instead of heavy synthetics, and sugar-cane-based foam midsoles. 

• The manufacturing and material choices align with Allbirds’ broader mission to reduce carbon footprint and use more earth-friendly alternatives. 

Care & Maintenance

• The shoe is machine-washable approved: simply remove the insoles and laces, hand-wash them separately, then let the uppers gently air-dry. 

• Because the knit upper breathes well, you’ll likely find it holds up well to regular wear—just follow the care instructions for longevity.