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The Flex Case - SIENNA
  • The Flex Case - SIENNA
  • Hand sliding sienna leather phone case into back jean pocket
  • Sienna leather phone case held over jeans pocket, showing camera cutout and embossed brand logo
  • Close-up of the Minimalist Case showing TPU protective rim and buttons
  • The Flex Case with TPU bumper for protection, featuring options for minimalist and contemporary designs.
  • The Flex Case - SIENNA
  • The Flex Case - SIENNA
  • The Flex Case in Sienna color, showing the back and front of the case.
  • Hands holding a phone in a sienna Flex Case, showing the side buttons.
  • The Flex Case in Sienna color with precision camera control cut-out
  • Close-up of the Flex Case - SIENNA showing closed bottom design with charging port.
  • A person holding the Flex Case - SIENNA phone case, partially inserted into their pocket.
  • The Flex Case - SIENNA
  • Close-up of the SIENNA Flex Case showing buttons and camera cutout
  • Close-up of the Flex Case in Sienna color with a card slot, resting on rocky surface.
  • Comparison of the Flex Case - SIENNA, fresh out of the box vs. after 180 days of use.
  • Close-up of The Flex Case in SIENNA color, showing seamless leather-to-TPU design with camera cutout.
  • Brown sienna leather phone case resting on a person's denim-clad lap, phone camera lenses visible.
  • Sienna phone case close-up showing side button and cutout; overlaid text 'CUTOUT' and 'BUTTON'.
  • The Flex Case - SIENNA
  • Hand sliding sienna leather phone case into back jean pocket
  • Sienna leather phone case held over jeans pocket, showing camera cutout and embossed brand logo
  • Close-up of the Minimalist Case showing TPU protective rim and buttons
  • The Flex Case with TPU bumper for protection, featuring options for minimalist and contemporary designs.
  • The Flex Case - SIENNA
  • The Flex Case - SIENNA
  • The Flex Case in Sienna color, showing the back and front of the case.
  • Hands holding a phone in a sienna Flex Case, showing the side buttons.
  • The Flex Case in Sienna color with precision camera control cut-out
  • Close-up of the Flex Case - SIENNA showing closed bottom design with charging port.
  • A person holding the Flex Case - SIENNA phone case, partially inserted into their pocket.
  • The Flex Case - SIENNA
  • Close-up of the SIENNA Flex Case showing buttons and camera cutout
  • Close-up of the Flex Case in Sienna color with a card slot, resting on rocky surface.
  • Comparison of the Flex Case - SIENNA, fresh out of the box vs. after 180 days of use.
  • Close-up of The Flex Case in SIENNA color, showing seamless leather-to-TPU design with camera cutout.
  • Brown sienna leather phone case resting on a person's denim-clad lap, phone camera lenses visible.
  • Sienna phone case close-up showing side button and cutout; overlaid text 'CUTOUT' and 'BUTTON'.
The Flex Case - SIENNA

The Flex Case - SIENNA

From: $80
COLORS
100% REAL LEATHER
COVERED BY A LIFETIME WARRANTY
45-DAY MONEY BACK GUARANTEE
Leather Magnetic Wallet in sienna color with a bull logo
Leather Magnetic Wallet - SIENNA
$59 30% Off
Black round MagSafe wireless charger with elephant logo; gold seal reading Covered by a LIFETIME Warranty
The MagSafe Charger
$45 30% Off
See it in Action
Description

Introducing the Bullstrap Flex Case, where our classic luxury leather meets stylish and sleek durability for your everyday use.

Crafted with precision from 100% full grain leather on the back and fortified with a shock-absorbent TPU rim, this case offers unparalleled protection and style.

All Bullstrap iPhone 17 cases will come with a state-of-the-art touch glass button specifically designed for the Camera Control feature.

All Bullstrap iPhone 16 cases now come with the option of either a precision cutout or a state-of-the-art touch glass button specifically designed for the Camera Control feature.

MagSafe Compatible, Protective, & Sleek. 

Important! This case is designed specifically to work with our new MagSafe Charging Cable! Get yours here!

 
Leather

Our premium full-grain leather is sourced from the finest tanneries. Each piece develops a unique patina over time, making your case truly one of a kind. The leather is naturally water-resistant and incredibly durable.
Features
  • MagSafe compatible
  • Precision cutouts for all ports and buttons
  • Slim profile design
  • Raised edges for camera protection
  • Wireless charging compatible

GOES TOGETHER WITH

The MagSafe Charging Puck

From: $45
A hand holding the Flex Case in SIENNA color, showcasing its leather texture and design.A hand holding the Flex Case in SIENNA color, showcasing its leather texture and design.

THE REAL STUFF.

100% full-grain leather. No fake "pleather", no BS!

Bullstrap's Founder talking about The Flex iPhone cases.

Tan leather iPhone case with embossed bull logo and triple-camera cutout.
Before
Brown leather iPhone case with triple-camera cutout and small embossed bull logo, shown on black background.
After

PATINA PROUD

100% FULL-GRAIN LEATHER

pa·ti·na - the natural aging process that occurs on the surface of leather products over time. As leather is exposed to elements such as light, air, and handling, it develops a unique, rich sheen and darkens in color. This change is often considered desirable because it enhances the leather's character and beauty, giving it a distinctive, lived-in appearance.

MAGSAFE COMPATIBLE.

MAGSAFE COMPATIBLE.

Designed to work with all MagSafe accessories, but, it works especially well with the Bullstrap MagSafe Wallet (sold separately).

VERSATILE APPEAL.

VERSATILE APPEAL.

Whether you're in the office or traveling, the Flex Case offers reliable protection without sacrificing style, ensuring your device remains safe wherever you go.

PREMIUM LEATHER WITH A TWIST.

PREMIUM LEATHER WITH A TWIST.

Experience luxury with the Flex Case, meticulously crafted from 100% full grain leather and seamless protection.

FAQ
Is this product really covered by a Lifetime Warranty?

Yes, it’s real. And it’s awesome. If you want to read some legal nonsense, you can learn more about our Lifetime Warranty by clicking the link at the bottom of this page. But suffice it to say, we’ve got you covered.
Do the Flex cases have a lock magnet?

Yes! It’s the magnetic line under the circle of magnets to help it stay in place and not spin around.
How does the Flex case differ from the Minimalist case?
The main difference is protection! The shock absorbing TPU rim on the Flex case will protect not only your phone, but also the full-grain leather backing from getting torn on the sides. Other than the sides, the phone case are both MagSafe compatible and made with the highest quality leather on the market.

The main difference is protection! The shock absorbing TPU rim on the Flex case will protect not only your phone, but also the full-grain leather backing from getting torn on the sides. Other than the sides, the phone case are both MagSafe compatible and made with the highest quality leather on the market.

Do the MagSafe cases have a lock magnet?

Yes! It’s the magnetic line under the circle of magnets to help it stay in place and not spin around.

We added this extra protection to prevent ripping/tearing on the edges of your case! We understand leather and while it may be beautiful, it sometimes doesn't withstand being dropped on concrete. That's why we made this case. for those who want the look of a leather case with also the protective characteristics of a plastic case!

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COVERED FOR LIFE.

And we mean it. Read more about our exclusive lifetime warranty below.

LEARN MORE