New for iPhone 18 Pro and Pro Max

Luxury rectangle iPhone cases that turn heads

Distinctive finishes and polished details, designed to make your phone part of the look.

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  • Drop-tested to 10 feet
  • MagSafe compatible
  • Featured in WSJ
  • Trusted by 2.5M+ customers
  • Free express shipping
  • 30-day returns

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COCOMII Real mother of pearl rectangle iPhone case in Natural, MagSafe
Natural
REAL MOTHER OF PEARL
$50
COCOMII Abalone shell rectangle iPhone case in Galaxy, MagSafe
Galaxy
ABALONE SHELL
$50
COCOMII Tortoiseshell rectangle iPhone case in Chestnut, MagSafe
Chestnut
TORTOISESHELL
from $40
COCOMII Crocodile leather rectangle iPhone case in Ivory, MagSafe
Ivory
CROCODILE LEATHER
$50
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8 products

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Find your finish.

All designs
Woman in a cream knit sweater holding a white COCOMII rectangle iPhone case in front of her face

Calm · Polished · Effortless

Minimal

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Red-haired woman holding a COCOMII rectangle iPhone case with a black and cream spotted pattern beside her face

Bold · Confident · Striking

Animal

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Woman in a white top holding an iridescent COCOMII rectangle iPhone case up in the sunlight

Radiant · Luminous · Captivating

Iridescent

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Woman in a red sweater holding a COCOMII rectangle iPhone case with a colorful checkered pattern

Chic · Elevated · Dynamic

Pattern

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COCOMII mother of pearl MagSafe iPhone case - boxy flat-edge shell with right-angle corners

The signature

Real mother of pearl.

Genuine mother of pearl, set on a polycarbonate and TPU shell. Natural opalescence with true luxury depth.

  1. 0110-foot drop tested
  2. 02Built-in MagSafe magnet ring
  3. 03Raised edges around the camera and screen
Shop mother of pearl

4.96

5,857 reviews

Customer reviews

Loved for the details.

Customer Reviews

4.96 ★ (5857)
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Find your fit

Shop by iPhone.

Every design, sized for your model.

  1. 01 iPhone 18 & iPhone 17 11 designs
  2. 02 iPhone 16 12 designs
  3. 03 iPhone 15 & iPhone 14 12 designs
  4. 04 iPhone 13 & earlier 9 designs

The Style Edit

Notes on the rectangle.

Read the Style Edit

About COCOMII

Design That Feels Like You

COCOMII makes luxury rectangle iPhone cases: a boxy, flat-edged silhouette with sharp right-angle corners, finished in genuine mother of pearl, alongside abalone, tortoiseshell and other premium finishes. Every case is MagSafe compatible, drop-tested to 10 feet, and ships free across the United States with 30-day returns.

★ 4.96/5 from 5,857 customer reviews