Rectangle iPhone 18 Pro/17 Pro Cases

A COCOMII iPhone 18 Pro case is also an iPhone 17 Pro case. The two phones share one fit, carried on our signature flat-edge rectangle silhouette with defined corners. Finishes run from real mother of pearl and abalone shell effect to leopard print and croc-embossed faux leather.

Fit and Dimensions

The iPhone 18 Pro measures 150.0 x 71.9 x 8.75 mm (height, width, depth) and weighs 211 g, per the official specifications. The iPhone 17 Pro matches it in height, width and depth, and only the weight differs. That is why the two phones share one COCOMII case. Our fit guide for the 17 and 18 pairs has the details. To match a case color to Black, Silver, Glacier or Burgundy, see which case color suits each iPhone color.

Finishes for the iPhone 18 Pro and 17 Pro

Real Mother of Pearl is the only case here made with a genuine natural material. Its materials are genuine mother of pearl, TPU and polycarbonate, with a glossy finish in Natural, Pink and Turquoise. For more, read our mother of pearl phone case guide.

Abalone Shell Effect has a glossy finish in Galaxy, Milky Way, Eclipse and Nebula. For more, read our abalone phone case guide.

Opal Effect has a glossy finish in Hot Pink and Pink.

Leopard Print is a glossy print in Ivory, Botanical, Crimson and Camouflage. For more, read our leopard print iPhone case guide.

Croc-Embossed Faux Leather has a matte finish and a crocodile texture, in Ivory and Rosewood Camouflage. Its materials are faux leather, TPU and polycarbonate. For more, read our crocodile iPhone case guide.

Zebra Print is a glossy print in Bold Chroma.

MagSafe, Fit & Protection

Every COCOMII case in this collection has a built-in MagSafe magnet ring and is 10-foot drop tested. The shell is polycarbonate and TPU, cut as a flat-edge rectangle with defined corners. New to the shape? Start with our rectangle phone case guide.

How do I check which iPhone I have?

Open Settings, tap General, then About, and read the Model Name line. If it says iPhone 18 Pro or iPhone 17 Pro, this is your collection.

Is this collection for the iPhone 18 Pro Max?

No. This collection is sized for the iPhone 18 Pro and iPhone 17 Pro. The iPhone 18 Pro Max and iPhone 17 Pro Max have their own collection.

Do these cases work with MagSafe?

Yes. Every COCOMII case in this collection has a built-in MagSafe magnet ring.

Do these cases protect an iPhone 18 Pro from drops?

Every case in this collection is 10-foot drop tested. The shell is polycarbonate and TPU.

Which finishes are genuine and which are effects?

Only the Real Mother of Pearl case uses a genuine natural material. The abalone shell effect and opal effect finishes are effects, leopard and zebra are prints, and the crocodile design is embossed faux leather.