Caring for Air Units
Nike Air units are the most durable component on the shoe — encapsulated bags routinely outlast the upper and outsole. Visible Air windows can yellow over time and edge seams can fail (rare). Care is mostly about not poking them with anything sharp.
Overview
How often
Wipe around the Air unit whenever you clean the pair, roughly every 30 wears. Brighten windows only when they yellow.
Materials covered
Encapsulated Air-Sole, Visible / Max Air, Zoom Air
What you'll need
- Reshoevn8r Sole Revive (Unyellowing Treatment)Window brightening
- Jason Markk Quick Wipes (30-pack)Spot wipe
Picked for the material, not paid for. Test anything new on a hidden spot first.
Step by step
Step 1: Surface cleaning
Damp microfiber for the surrounding foam.
Step 2: Yellowed Max Air windows
Sole brightener works. Apply to the window, wrap with cling film and cure under a UVA nail or resin curing lamp (never a UV-C germicidal lamp) or in mild sun — don't let it get hot, since heat raises the pressure in the bag. Gloves and eye protection, a ventilated room, and don't sit under the lamp. The window is TPU, so it responds like any TPU.
Step 3: Never put pressure on the visible Air bag
When wiping, support the foam around the window rather than pressing on the bag itself.
Step 4: Don't pierce or puncture
Keep sharp tools away from where you clean.
What to avoid
- Pressing hard on the visible Air bag
- Sharp tools near the unit
- Heat while curing brightener
- Stacking heavy items on Max Air pairs
By material
The routine above, adjusted for each material it covers.
Encapsulated Air-Sole
Encapsulated Air-Sole. Invisible from outside, lives inside the foam carrier. Aging signal: foam carrier yellows or compresses around it; the unit itself is fine. AF1 Low, AJ1, AJ3/4/5/6 heel Air units.
Visible / Max Air
Visible / Max Air. Exposed bag. Window yellowing is the cosmetic concern; puncture is the catastrophic concern. AM1, AM90, AM95, AM97, AM98.
Zoom Air
Zoom Air. A tensioned bag inside the foam carrier, smaller and more responsive than Air-Sole. Large, high-pressure Zoom units are slightly more prone to slow leaks over many years than small ones. Most Zoom units last the life of the shoe.
Between wears
- Standard. Cool, dark, dry. Same as everything else.
- Puncture risk. Keep pairs away from tool drawers, exposed nails and anything sharp they could fall onto.
- Compression. Don't stack heavy items on Max Air pairs — the bag can deform over months.
Related guides
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Preventing Midsole Rot
Older Jordans, Air Max 95s and 97s, ENCAP New Balance runners and some adidas pairs use polyurethane (PU) midsoles that slowly break down — the crumbling people call midsole rot, often after 5–10 years. Good storage and regular wear slow it down.
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Cleaning & Brightening Midsoles
Most modern pairs — Nike Phylon and Cushlon, adidas Lightstrike, most casual silhouettes — use EVA-based foam midsoles. Boost (TPU) and ZoomX (PEBA) are covered here too, with their own rules. Slow compression over years of wear is normal, not a defect. Keep them clean and out of hot cars and they'll last.
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Caring for Gel Cushioning
ASICS Gel, Reebok DMX, Mizuno Wave — encapsulated cushioning sitting inside the surrounding midsole foam. The pods themselves are durable; the concerns are the foam around them and the clear windows that expose the gel. Keep them out of extreme heat.
