What is the difference between the semi-cover and full-cover versions?

The main differences between the two versions are the level of protection and the overall handling experience. Semi-Cover: Features exposed side buttons and an open-bottom design. It is lighter and slimmer, giving the phone a feel closer to using it without a case. Ideal for users who prefer a more minimal and lightweight experience. Full-Cover: Covers every edge and corner for more comprehensive daily protection. Ideal for users who prioritize added protection.

A18 Ultra Slim Gradient Aramid Fiber Case for iPhone 18/17 Pro Series

A18 Ultra Slim Gradient Aramid Fiber Case for iPhone 18/17 Pro Series

$69.98

Model:18/17 Pro Max

Variant

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• Gradient-Woven Aramid Fiber — a woven grayscale gradient creates layered texture without relying on a printed surface pattern.
• Full-Cover Protection — wraps around the sides, corners, and buttons for more complete everyday protection and a seamless profile.
• 1.2mm Slim & 26g Lightweight — engineered to preserve the slim, lightweight feel of your iPhone with minimal added bulk.
• Upgraded CoolHyper Cooling — a silicone thermal pad, aluminum heat sink, and honeycomb ventilation structure help transfer and release heat more efficiently.
• Aluminum Camera Guard — hard-anodized aluminum alloy protection helps reduce scratches and everyday wear around the camera area.
• Strong MagSafe Compatibility — built-in magnets provide stable alignment with compatible chargers, stands, power banks, wallets, and other magnetic accessories.

Aramid Matrix

Four distinct expressions of aramid fiber—from ultra-slim minimalism to full-cover protection.

Learn More

Beauty Unfolds

A18 Ultra Slim Gradient Aramid Fiber Case

600D Aramid Fiber | Full-Cover Protection | Aluminum Camera Guard | Signature CoolHyper Tech | Ultra-Strong MagSafe

The Next Evolution of Aramid Fiber

A full-cover design wraps the edges and side buttons for more complete protection—while keeping the slim, lightweight feel of aramid fiber.

Full-Cover Protection

Seamless edge-to-edge coverage with reinforced corners for more complete everyday protection.

Aramid, Rewoven in Gradient

Aulumu Keeping explores the edge of Aramid Fiber weaving processes: a gradient texture on the outer surface and a solid black plain weave on the inner surface to create a case with a finer texture and more consistent strength.

Ultra-Slim. Rich in Texture.

At just 1.2mm and 26g+, the woven gradient aramid fiber keeps the case barely there while adding depth you can see and feel.

Unbound Texture

A refined gradient weave that moves naturally from streetwear to workspaces and everyday carry.

CoolHyper, Upgraded for A18

A more direct thermal path brings the cooling zone closer to the CPU for faster, more efficient heat dissipation.

Keep Your Phone Always Cool

A18 dissipates heat faster to slow temperature rise and maintain a lower core temperature during demanding use.

Real-Time Temperature Monitoring

The temperature-sensitive color-changing strip helps you understand the device's status more intuitively.

Precision in Every Press

Smooth, responsive Camera Control for faster, more intuitive shooting.

Ultra-Strong MagSafe

Reliable MagSafe attachment keeps your setup secure across work, travel, content creation, and everyday use.

Aulumu Ecosystem Compatibility

Built-in Ultra-Strong MagSafe achieves a fast and stable attachment experience

Product Specs

- Brand: aulumu
- Product Name: A18 Ultra Slim Gradient Aramid Fiber Case
- Color: Black Gradient
- Material: Aramid Fiber, Aluminum Alloy
- Size: Pro: ~152*75.2*14.70mm; Pro Max: ~165.5*82*14.70mm
- Weight: Pro: ~26g; Pro Max: ~31g
- Compatibility: iPhone 18 Pro / 18 Pro Max / 17 Pro / 17Pro Max
*Manual measurements may have minor discrepancies; however, these variations will not impact their practical use.

Will the A18 Ultra Slim Gradient Aramid Fiber Case be slippery? What does it feel like?

The A18 Ultra Slim Gradient Aramid Fiber Case features a fine-weave texture and a skin-friendly coating. It is comfortable to hold, provides a secure grip, and is easy to clean.

Will the A18 Ultra Slim Gradient Aramid Fiber Case affect cellular service, GPS, Wi-Fi, or Bluetooth?

No. Aramid fiber is not metal, so it does not normally interfere with Wi-Fi, cellular service, GPS, or Bluetooth signals.

Can the camera guard protect the lens properly?

Yes. The lens area is protected by a durable aluminum alloy frame that helps minimize wear caused by placing the phone on surfaces or from accidental sliding during everyday use.

Will the heat-sensitive color-changing strip keep changing color? Will it become less sensitive over time?

The strip uses a thermochromic material that changes color in response to temperature variations. The visible color change can vary depending on ambient temperature, the location and intensity of the heat source, and the amount of heat applied.

Will removing and attaching the A18 Ultra Slim Gradient Aramid Fiber Case scratch the phone?

Generally, no. The case should not scratch the phone when installed and removed properly. We also recommend removing any dust or debris from both the phone and the inside of the case before installation.

How do I properly remove the A18 Ultra Slim Gradient Aramid Fiber Case?

To avoid damaging your phone or the case, we recommend starting to remove the case from the upper-right corner.
Use your thumb to press down near the camera plateau and gently push the top-left corner outward and forward to detach the case from the phone.
After loosening the top-left corner, push out each of the remaining corners along the edges, one by one.