Review and Giveaway: Designed by m’s AL13 iPhone 5 Bumper

Review and Giveaway: Designed by m's AL13 iPhone 5 Bumper

Upon unboxing the AL13 Aerospace Aluminum iPhone 5 bumper priced at $59.99 from Designed by m, the simplicity of the packaging—a plain cardboard box—belies the sophistication of what’s inside. Inside, you’ll find a sleek, aircraft-grade aluminum bumper, alongside a screen protector packet.

Unlike many aluminum bumpers we’ve evaluated for the iPhone 5, which often require specialized tools for fitting, the AL13 stands out with its tool-free design.

Review and Giveaway: Designed by m's AL13 iPhone 5 Bumper

It features a sliding mechanism for easy attachment and removal.

Installation is straightforward: slide off the back, place your iPhone inside, and slide the back on again. The bumper is lined with a soft material to prevent scratches to your phone, and it includes precise openings for all buttons and ports.

The design is complemented with chamfered edges and subtle logos from Designed by m.

The AL13 is available in five anodized colors: gunmetal, blue, slate, silver, and red. It comes with a polyurethane screen protector and a protective film for the back of your phone.

Although the AL13 can reduce signal strength by about 5 to 10 percent, this is significantly less than the typical 25 percent reduction seen with other metal bumpers, according to Designed by m.

One of the standout features of the AL13 is its light weight—only 14 grams, adding just about 12 percent to the weight of the iPhone 5.

Does it effectively protect your iPhone 5? Absolutely.


Wei is a dedicated writer for TUAW, bringing readers the latest insights and updates on all things Apple. With a keen eye for detail and a love for technology, Wei covers everything from the newest iPhone releases to the latest macOS updates. His articles are a go-to source for Apple enthusiasts who want to stay informed about their favorite gadgets, including the iPad, Apple Watch, and MacBook. Wei’s clear and engaging writing style makes complex tech topics accessible to everyone.