Rectangle iPhone 18 Pro Max/17 Pro Max Cases

Rectangle iPhone 18 Pro Max/17 Pro Max Cases

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    COCOMII stocks eleven finishes for the iPhone 18 Pro Max/17 Pro Max, every one of them on our signature rectangle silhouette, with MagSafe compatibility and 10-foot drop protection.

    COCOMII Real mother of pearl rectangle iPhone case in Natural, MagSafe
    Natural
    REAL MOTHER OF PEARL
    $60
    Sold Out
    COCOMII Real mother of pearl rectangle iPhone case in Pink, MagSafe
    Pink
    REAL MOTHER OF PEARL
    $60
    COCOMII Real mother of pearl rectangle iPhone case in Black, MagSafe
    Black
    REAL MOTHER OF PEARL
    $60
    COCOMII Real mother of pearl rectangle iPhone case in Turquoise, MagSafe
    Turquoise
    REAL MOTHER OF PEARL
    $60
    Sold Out
    COCOMII Abalone shell rectangle iPhone case in Galaxy, MagSafe
    Galaxy
    ABALONE SHELL
    $50
    Sold Out
    COCOMII Abalone shell rectangle iPhone case in Milky Way, MagSafe
    Milky Way
    ABALONE SHELL
    $50
    COCOMII Abalone shell rectangle iPhone case in Eclipse, MagSafe
    Eclipse
    ABALONE SHELL
    $50
    Sold Out
    COCOMII Abalone shell rectangle iPhone case in Aurora, MagSafe
    Aurora
    ABALONE SHELL
    $50
    COCOMII Abalone shell rectangle iPhone case in Nebula, MagSafe
    Nebula
    ABALONE SHELL
    $50
    COCOMII Opal rectangle iPhone case in Pearlescent, MagSafe
    Pearlescent
    OPAL
    $50
    COCOMII Opal rectangle iPhone case in Hot Pink, MagSafe
    Hot Pink
    OPAL
    $50
    COCOMII Opal rectangle iPhone case in Iridescent, MagSafe
    Iridescent
    OPAL
    $50
    Sold Out
    COCOMII Opal rectangle iPhone case in Pink, MagSafe
    Pink
    OPAL
    $50
    COCOMII Opal rectangle iPhone case in Aurora, MagSafe
    Aurora
    OPAL
    $50
    Sold Out
    COCOMII Tortoiseshell rectangle iPhone case in Chestnut, MagSafe
    Chestnut
    TORTOISESHELL
    from $40
    Sold Out
    COCOMII Tortoiseshell rectangle iPhone case in Ivory, MagSafe
    Ivory
    TORTOISESHELL
    from $40
    COCOMII Tortoiseshell rectangle iPhone case in Amber, MagSafe
    Amber
    TORTOISESHELL
    from $40
    COCOMII Leopard rectangle iPhone case in Amber, MagSafe
    Amber
    LEOPARD
    from $40
    Sold Out
    COCOMII Leopard rectangle iPhone case in Ivory, MagSafe
    Ivory
    LEOPARD
    from $40
    Sold Out
    COCOMII Leopard rectangle iPhone case in Chestnut, MagSafe
    Chestnut
    LEOPARD
    from $40
    Sold Out
    COCOMII Leopard rectangle iPhone case in Botanical, MagSafe
    Botanical
    LEOPARD
    from $40
    Sold Out
    COCOMII Leopard rectangle iPhone case in Crimson, MagSafe
    Crimson
    LEOPARD
    from $40
    Sold Out
    COCOMII Leopard rectangle iPhone case in Princely Paisley, MagSafe
    Princely Paisley
    LEOPARD
    from $40
    COCOMII Clear rectangle iPhone case in Crystal Clear, MagSafe
    Crystal Clear
    CLEAR
    from $40
    Sold Out
    COCOMII Crocodile leather rectangle iPhone case in Black, MagSafe
    Black
    CROCODILE LEATHER
    $50
    COCOMII Crocodile leather rectangle iPhone case in Ivory, MagSafe
    Ivory
    CROCODILE LEATHER
    $50
    COCOMII Crocodile leather rectangle iPhone case in Rosewood Camouflage, MagSafe
    Rosewood Camouflage
    CROCODILE LEATHER
    $50
    COCOMII Checkered rectangle iPhone case in Neutral, MagSafe
    Neutral
    CHECKERED
    $50
    Sold Out
    COCOMII Checkered rectangle iPhone case in Le Carré de Luxe, MagSafe
    Le Carré de Luxe
    CHECKERED
    $50
    Sold Out
    COCOMII Checkered rectangle iPhone case in Monochrome, MagSafe
    Monochrome
    CHECKERED
    $50
    COCOMII Coastal rectangle iPhone case in Flamingo Paradise, MagSafe
    Flamingo Paradise
    COASTAL
    $50
    COCOMII Coastal rectangle iPhone case in Mariner's Treasure, MagSafe
    Mariner's Treasure
    COASTAL
    $50
    COCOMII Coastal rectangle iPhone case in Ocean Odyssey, MagSafe
    Ocean Odyssey
    COASTAL
    $50
    COCOMII Marble rectangle iPhone case in Molten, MagSafe
    Molten
    MARBLE
    $50
    COCOMII Zebra rectangle iPhone case in Bold Chroma, MagSafe
    Bold Chroma
    ZEBRA
    $50
    iPhone 18 Pro Max/17 Pro Max

    About COCOMII iPhone 18 Pro Max/17 Pro Max Cases

    The iPhone 18 Pro Max and iPhone 17 Pro Max share one COCOMII case size, built on our signature flat-edge rectangle silhouette with defined corners and a slim profile. Eleven finishes are offered, from real mother of pearl and opal through tortoiseshell, leopard and marble to crystal clear.

    MagSafe, Fit & Protection

    Every COCOMII case in this collection is made for the iPhone 18 Pro Max/17 Pro Max fit shown, with built-in MagSafe compatibility, reinforced rectangle corners and raised edges around the screen and camera. Cases are 10-foot drop-tested for everyday protection while keeping the structured flat-edge profile. Free US shipping is included on every order.

    Do iPhone 18 Pro Max and iPhone 17 Pro Max use the same COCOMII case?

    Yes. COCOMII sizes the iPhone 18 Pro Max and iPhone 17 Pro Max as one shared case fit, so the cases in this collection are designed for either model.

    Choose Your Finish

    Explore iPhone 18 Pro Max/17 Pro Max cases across COCOMII's four signature design families.

    Minimal Clear
    Animal TortoiseshellLeopardCrocodile LeatherZebra
    Iridescent Mother of PearlAbaloneOpal
    Pattern CheckeredCoastalMarble

    Complete the Look

    Pair your COCOMII case with a Phone Charm Wristlet or MagSafe Ring for a coordinated finish.

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