Flex-Grip Cup Holder | Multi-Size Fit

**PRE-LAUNCH: First production batch ships starting December 10. Orders placed now reserve your spot in the queue.**

An adaptive flex-spring cup holder insert that grips cans, bottles, blender cups, and oversized sports bottles that normally don’t fit — engineered for Rivian and everyday drivers.

Introducing the Flex-Grip Cup Holder — a precision-designed, multi-size adaptive cup holder insert that stabilizes everything from slim cans to massive blender cups using TPU flex arms and a tapered PETG housing.

⭐ Why it’s $49.99 (and why it’s worth it):
This isn’t a simple plastic cup insert.
The Flex-Grip Cup Holder is a precision-engineered mechanical upgrade, built with:
• Automotive-grade PETG for rigidity and heat resistance
• TPU flex-spring arms that self-adjust to different bottle sizes
• Large-format geometry that takes hours of print time
• Premium filament (not cheap recycled blends)
• Complex multi-material construction most shops won't attempt
• Real-vehicle testing with cans, Gatorade bottles, and blender cups
• Low-volume U.S. production on high-end Bambu Lab printers
Most cup holders on Etsy are simple single-material shells.
Flex-Grip is a mechanical system designed to function like a proper automotive component, not an accessory.

For a Rivian or any modern vehicle, this is the kind of upgrade that should have come from the factory.

**You’re not buying a cup holder — you’re buying the engineering behind it.**

⭐ What It Fits
The Flex-Grip Cup Holder adapts automatically to:
• 12 oz cans
• Standard water bottles
• Soda cans
• Gatorade bottles
• Blender cups (Nutri Ninja, Nutribullet, etc.)
• Tall insulated bottles
• Up to 40 oz bottles tested
If it normally rattles, wobbles, tips, or doesn’t fit — this fixes it.

⭐ How It Works
**TPU Flex-Spring System**
Flexible arms compress and expand smoothly, gripping bottles securely without scratching.

**PETG Structural Housing**
Rigid, heat-resistant, durable — engineered to hold shape in real-world heat.

**Tapered Base Design**
Seats firmly into Rivian R1S / R1T factory cup holders and nearly all standard automotive cup holders.

**Silent, Secure Hold**
Eliminates bottle rattle and wobble, even with tall or heavy cups.

⭐ Perfect For
• Rivian R1S
• Rivian R1T
• Daily drivers
• Commuters
• Gym & workout smoothies
• Blender-cup users
• Travelers
• People with oversized water bottles
•Anyone tired of “almost fits” factory cup holders

⭐ Materials
• PETG (rigid, heat-resistant body)
• TPU (flexible spring arms)
• All printed on Bambu Lab printers and hand-finished in the USA.

⭐ Blender Cup Compatibility
Compatible with popular blender cups including:
• Nutri Ninja
• Nutribullet
• Ninja Auto-iQ
• Ninja 24oz Single-Serve
• Similar tall smoothie cups
• If it fits your lifestyle but not your cup holder — this is for you.

⭐ Made in a Small Family Shop
We’re a small family business designing and producing functional, engineered upgrades for Rivian and modern vehicles. Every item is printed, tested, and packaged by us.

Follow the build journey:
Pinterest @Niftly3D
Etsy: https://niftly3d.etsy.com

⭐ Processing & Pre-Launch Info

This listing is currently in pre-launch.
Orders placed now ship starting December 10.

You can favorite this item or turn on “Notify me when available” for restock alerts.

⭐ FAQs
Q: Will this fit the Rivian R1T / R1S?
Yes — the tapered base was designed around Rivian’s factory cup holder geometry.

Q: Will it hold blender cups?
Yes. Tested with multiple brands including Nutri Ninja and Nutribullet.

Q: Will it hold large water bottles?
Yes. We’ve tested up to 40oz bottles.

Q: What materials do you use?
PETG for rigidity and heat stability. TPU for flexible arms.

Q: Is this 3D printed?
Yes — printed on high-end Bambu Lab printers and quality-tested by hand.