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Three-quarter view of The Flex Case in Sienna leather showing raised camera lip and embossed bull logo on white background
  • Three-quarter view of The Flex Case in Sienna leather showing raised camera lip and embossed bull logo on white background
  • Sienna leather phone case held over jeans pocket, showing camera cutout and embossed brand logo
  • Side close-up of The Flex Case Sienna showing TPU protective rim and side buttons with TPU PROTECTIVE RIM overlay
  • The Flex Case with TPU bumper for protection, featuring options for minimalist and contemporary designs.
  • Angled side view of Sienna leather Flex Case showcasing tactile side buttons and slim profile while held in hand against a soft white background
  • Angled top-down view of Sienna leather Flex Case showing raised camera cutout and embossed logo on a dark suede surface
  • 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.
  • Hand holding The Flex Case in Sienna, back view showing camera cutout, embossed logo and leather finish against blue background
  • 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.
  • Two sienna leather Flex Cases side-by-side, left new and right worn; labels: FRESH OUT OF THE BOX and AFTER 180 DAYS.
  • 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'.
  • Three-quarter view of The Flex Case in Sienna leather showing raised camera lip and embossed bull logo on white background
  • Sienna leather phone case held over jeans pocket, showing camera cutout and embossed brand logo
  • Side close-up of The Flex Case Sienna showing TPU protective rim and side buttons with TPU PROTECTIVE RIM overlay
  • The Flex Case with TPU bumper for protection, featuring options for minimalist and contemporary designs.
  • Angled side view of Sienna leather Flex Case showcasing tactile side buttons and slim profile while held in hand against a soft white background
  • Angled top-down view of Sienna leather Flex Case showing raised camera cutout and embossed logo on a dark suede surface
  • 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.
  • Hand holding The Flex Case in Sienna, back view showing camera cutout, embossed logo and leather finish against blue background
  • 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.
  • Two sienna leather Flex Cases side-by-side, left new and right worn; labels: FRESH OUT OF THE BOX and AFTER 180 DAYS.
  • 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'.
FINAL SALE
FINAL SALE - The Flex Case - SIENNA

The Flex Case - SIENNA

From: $19 $80

This product is not eligible for returns or exchanges, and is not covered by the Lifetime Warranty.
Color: SIENNA
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.

FINAL SALE - Cases marked as final sale will not be covered by our Lifetime Warranty or eligible for returns/exchanges.
Leather

- Hides sourced from Europe and northern United States
- Chrome tanning process
- Full-Grain leather with natural variation in texture
- Lightly buffed and dyed with water-based dyes
- Sprayed with oils and waxes for enhancement effects
- Polished to achieve a two-tone color effect
Features

- N52 strongest grade magnets
- TPU bumper construction for maximum case durability and drop-protection
- 316-L Monochromatic Stainless Steel Buttons
- Microfiber inside lining for debris protection
- Badass Bullstrap logo embossed into leather

For Cases with a Camera Control Button:
- Aluminum Button
- PCB Sensing Panel
- Touch Glass Panel
- Soft Link Combination

Pairs well with...

Leather Magnetic Wallet in sienna color with a bull logo
Leather Magnetic Wallet - SIENNA
$59
Leather NavSafe Wallet - SIENNA
Leather NavSafe Wallet - SIENNA
$89
Magnetic Popper Wallet - SIENNA
Magnetic Popper Wallet - SIENNA
$59

FAQS

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.

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.
A brown leather iPhone case with a logo, placed on a white surface next to a pen and a camera.

"No matter what leather case you have, if you drop it, the sides get scuffed. This case is the solution to that problem and it's executed beautifully." - Tyler F.

Reasons to Love

Enjoy your journey with Bullstrap.

A person holding the Flex Case - SIENNA phone case, partially inserted into their pocket.

MAGSAFE COMPATIBLE.

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

A brown leather iPhone case with a logo, placed on a white surface next to a pen and a camera.

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.

Close-up of the bottom of the Bullstrap Flex Case showing the charging port and speaker holes.

PREMIUM LEATHER WITH A TWIST.

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

Open book and gray notebook on a black desk mat, reading glasses, ceramic mug, wooden tray with candle and watch, and a pen holder.
Interior view of the Leather MacBook Sleeve showing compartments and a MacBook inside.
Hands opening a worn brown leather backpack on a concrete floor.
A person in a suit holding a tan leather iPad case, branded SIENNA.