Features:
- Proprietary leak-proof, stainless steel lid with knurled edge.
- Lid magnetically nests underneath while sipping.
- Designed for on-the-go travel seekers and all-season enthusiasts
- Vacuum insulation keeps drinks hot or cold for hours
- 18/8 kitchen-grade stainless steel & dishwasher-safe design.

Powerful products protect perfect places. SMMT is a member of 1% For The Planet, contributing to Summit Land Conservancy to protect open spaces and water locally.
Why the Serpa Tumbler
Why the Serpa Tumbler
Personalization
Personalization
Size & Dimensions
Size & Dimensions
Shipping
Shipping
Warranty
Warranty
Care Information
Care Information
SMMT LAB
Our experimental studio for limited-time projects. From artist residencies to cultural alliances to creative explorations, each release is issued for a single 30-day window..
"Best tumblr I have, out of many!
I love that the lid actually seals properly, I don't have any worry about leaks and the lid fits snuggly on the bottom when I don't need it. Also is great at keeping my drinks the proper temp for a long while."
–Justin
3-Way Insulation
Our Sèrpa Tumblers go beyond traditional double-wall vacuum insulation (01) by also protecting against temperature escape with an unrivaled upper barrier (02) and by creating separation off the ground to reduce downward conduction and energy loss (03)
Sip & Stow Double Lid System
Our patent-pending, 100% leak proof lid system is made from two engineered parts: a stainless steel upper lid which magnetically stows in the base, sealed away from dirt and debris, and an inner-lid ergonomically designed for pleasant sipping, made from high-end, BPA-free Tritan polymer.
Elevate Your Chill
Born in the mountains of Park City, Utah, designed for the pauses that matter. Our drinkware is tested and proven at elevation so you can chill anywhere without compromise.
Frequently Asked Questions
How do I clean and maintain my SMMT tumbler?
Serpa Tumbler can be easily cleaned with warm, soapy water, and they are dishwasher safe.
For the best long-term care, follow the care instructions provided with each product to maintain its quality and durability. We’re here to help your gear last, adventure after adventure.
Are SMMT tumblers dishwasher safe?
Absolutely! Our Serpa Tumblers are built tough with 18/8 stainless steel, making them dishwasher-friendly for easy cleaning after a long day of adventures. For those who prefer a gentler method, hand washing with warm, soapy water works beautifully too. Whichever way you choose, your tumbler is crafted to endure and maintain its peak performance.
Are SMMT tumblers made for hot or cold beverages?
All SMMT Serpa Tumblers are designed to keep both hot and cold beverages at the perfect temperature. Made from high-quality stainless steel, it ensures your drinks stay just how you like them—whether it’s a hot coffee in the morning or a refreshing iced drink after your adventure. Its durable, sleek design is perfect for any activity, whether you're out in nature or on the go. Keep your drink at the ideal temperature wherever your day takes you!
What is the warranty on SMMT tumblers?
At SMMT, we craft products with the utmost attention to quality and durability, built to withstand the rugged mountain environment.
To ensure your gear is up for the challenge, we offer a Limited Lifetime Warranty covering manufacturing defects and material failure for the expected lifespan of the product.
Please note that the warranty does not cover wear and tear, washing/heat damage, or damages caused by alterations or third-party services (e.g., airlines). If you have a warranty claim or need more information, you can start the process here.
What makes the Serpa Tumbler better?
The Serpa Tumbler is our take on the modern insulated cup-crafted for mountain days and the moments earned after. Inspired by Park City’s mining heritage and shaped by timeless design, it blends 18/8 kitchen-grade stainless steel, vacuum insulation, and a patent-pending steel lid system into one refined, functional vessel.
Why It’s Different
- Patent-pending double-lid system with magnetic nesting steel lid
- 18/8 kitchen-grade stainless steel with no interior coatings
- Small-batch production for elevated quality control
- Designed for both outdoor adventure and après gatherings
Is this tumbler really healthier?
We think so.
- BPA-free components
- Non-reactive stainless steel interior
- Dishwasher safe for proper sanitation
- Built to replace disposable cups
Is the Serpa Tumbler worth it?
The Serpa isn’t mass-produced trend drinkware. It’s a considered piece of mountain utility—crafted to last, designed to elevate daily rituals, and made in small runs to protect quality and intention.