FINAL SALE

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

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.

- 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

- 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

FAQS

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.

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

"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).

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.

Overall rating: 4.4646683 / 5 from 467 reviews.

AI Generated Review Summary

The Flex Case by SIENNA is highly praised for its top-notch quality, sleek and luxurious look, and excellent protection. Customers appreciate the rich color options and the perfect fit, though some have noted issues with the buttons. The lifetime warranty is also highly regarded.

Summary topics

Overall Quality (10%): It was reported by customers that the quality of the product is top-notch and excellent.
Protection Level (5%): It was highlighted by customers that the protection provided by the case is great and highly praised by many.
Color Options (6%): Customers expressed appreciation for the beautiful and rich color options available for the product, with multiple reviews mentioning their love for the color options.
Aesthetic Appeal (11%): Customers keep praising the sleek and premium look of the flex case, with many mentioning that it looks great and luxurious.
Button Functionality (6%): In general, customers mentioned that the buttons could be better, but overall they loved the flex case.

Review topics: ["color","texture","fit","smell","quality","packaging","shipping","feels","service","buttons","warranty","looks","customer service","grip","edges","price","style","support","replacement","issue","durability","scratches","connection","case","material","control","leather","protection","phone","bullstrap"].

Review highlights

"Great product, perfect fit very durable and makes the phone look great" — Bert B.
"This case is everything I wanted—premium leather, great fit, and real protection." — Kaia W.
"Perfect fit, premium leather, and strong MagSafe." — Jonathan P.

Reviews

My favorite leather case model—excellent finish, simply amazing.

"My favorite leather case model—excellent finish, simply amazing."

— Thomas K. (5/5)

Case is falling apart

"I’ve had the case for about 3 1/2 months and the side button has fallen apart. I’m a bit disappointed on the product."

— Eddie L. (3/5)

highly recommended.

"The case is fantastic; I love the smell of the new leather. Everything is perfect—highly recommended."

— daniel L. (5/5)

highly recommended.

"highly recommended."

— daniel L. (5/5)

My favorite leather case model—excellent finish, simply amazing.

"My favorite leather case model—excellent finish, simply amazing."

— Thomas K. (5/5)

Very fast delivery, excellent phone

"Very fast delivery, excellent phone case quality."

— daniel L. (5/5)

Very fast delivery, excellent phone case quality.

"Very fast delivery, excellent phone case quality."

— daniel L. (5/5)

Great Look and Feel Case

"Love the look and feel of the leather case! Probably the best case I have used!"

— Edison T. (5/5)

thank you, love this case

"thank you, love this case"

— Dphcm H. (5/5)

Exceptional leather case

"Highest quality leather case with protection for drops"

— Joseph L. (5/5)

Q&A

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.