How to Waterproof Allbirds Wool Runner NZ for Wet Weather
By Allbirds | Published: 2026-10-15
Category: Tips & Care
Keep your Wool Runner NZ dry and warm with a simple waterproofing routine. Learn when to spray, how to apply it, and what to avoid.
Quick answer
The Women's Wool Runner NZ Waterproof is already built with a waterproof membrane, so you do not need to add a spray to keep water out. For the non-waterproof Wool Runner NZ, use a wool-safe waterproofing spray before wearing them in wet weather. Always test on a small area first and reapply each season.
Why wool needs different waterproofing than leather or canvas
Merino wool naturally resists light moisture and stays warm even when damp, but it is not fully waterproof. A waterproofing spray adds a durable water-repellent finish that makes rain bead up and roll off. Avoid silicone-based sprays, which can coat the fibers and reduce breathability. Instead, choose a water-based fluoropolymer-free spray designed for wool and delicate fabrics.
How to apply waterproofing spray step by step
Work outside or in a well-ventilated area. Stuff the shoes with crumpled paper to hold their shape and keep the interior dry. Hold the spray can 6–8 inches away and apply a light, even coat over the entire upper, including the tongue and collar. Do not saturate the fabric. Let the shoes air-dry for at least 24 hours away from direct heat. For best protection, apply a second light coat after the first is fully dry.
What to do if your Wool Runner NZ gets soaked
If your shoes get wet, remove the insoles and laces and let them air-dry at room temperature. Never put wool shoes in a dryer or near a radiator—heat shrinks wool and can damage the waterproof membrane on the Waterproof version. Stuff them with dry paper towels and replace the paper every few hours until dry. Once dry, reapply waterproofing spray to restore the repellent finish.
Waterproofing steps at a glance
- Check if your shoes are already waterproof: Look at the product name or label. The Women's Wool Runner NZ Waterproof has a built-in membrane and does not need spray. If you have a standard Wool Runner NZ, continue to step 2. Common mistake: spraying a waterproof model can clog the membrane and reduce breathability.
- Clean and dry the shoes first: Brush off dirt and let the shoes dry completely. Spraying over dirt or damp fabric prevents the waterproofing from bonding evenly. Checkpoint: shoes should be at room temperature and dry to the touch before you start.
- Apply a wool-safe waterproofing spray: Use a water-based, fluoropolymer-free spray. Hold 6–8 inches away and apply a light, even coat. Do not soak the fabric. Let dry for 24 hours, then apply a second coat. Common mistake: spraying too close or too much, which can leave a sticky residue or darken the wool.
- Reapply every season or after cleaning: Waterproofing wears off with use. Reapply at the start of rainy season or after any deep cleaning. Store shoes in a cool, dry place. Checkpoint: if water stops beading on the surface, it is time to reapply.
Product facts
- Women's Wool Runner NZ Waterproof - Medium Grey (Natural White Sole): Women's Wool Runner NZ Waterproof - Medium Grey (Natural White Sole): Boot-like protection, sneaker-like performance. Weather any storm with our fully waterproof Wool Runner NZ built to keep water out and warmth in. This model already has a waterproof membrane, so you do not need to add a spray for rain protection. It is the best choice if you often walk in wet conditions.
- Women's Canvas Cruiser - Sea Spray (Natural White Sole): Women's Canvas Cruiser - Sea Spray (Natural White Sole): Classic court style, relaxed for warmer days. Cruiser Canvas pairs a familiar silhouette with a subtly textured hemp-and-cotton upper that feels light, breathable, and ready to wear on repeat. Canvas is not naturally water-repellent, so if you wear these in wet weather, a waterproofing spray can help, but they are not designed for heavy rain.
- Men's Runner NZ Slip On - Light Grey (Light Grey Sole): Men's Runner NZ Slip On - Light Grey (Light Grey Sole): No laces. No slowdown. Runner NZ Slip On delivers the lightweight comfort you know from our Runner collection—now in a clean slip-on with a breezy feel, a sleek profile, and subtle texture that adds movement and dimension. The slip-on design is easy to treat with spray, but the knit upper is not waterproof. Use a spray if you plan to wear them in light rain.
