• Mammoth 12 oz Rover Tumbler
  • Mammoth 12 oz Rover Tumbler
  • Mammoth 12 oz Rover Tumbler
  • Mammoth 12 oz Rover Tumbler
1 4

Rover Tumbler | 12 oz

$23.99
$0.00
$23.99
Shipping calculated at checkout.
  • Estimated to ship in 8-10 business days
Color – Black
    Features
  • • Kitchen-Grade Durability: Forged from resilient 18/8 stainless steel, this tumbler prevents rust and metallic aftertastes while easily withstanding the daily bumps of a busy commute.
  • • Extreme Temperature Retention: The double-wall vacuum insulation locks in your desired temperature, keeping beverages piping hot for over 12 hours or icy cold for more than 36 hours.
  • • Sweat-Free Exterior: By efficiently trapping the internal temperature, the insulated design guarantees a completely condensation-free exterior to keep your hands, bags, and workspace dry.
  • • Secure, Spill-Resistant Lid: A crystal-clear lid—reinforced with a tight rubber gasket and stopper—ensures every drop stays safely contained while allowing you to easily check your beverage level.
    •
    Description

    Enhance your routine with a premium desktop essential. The Mammoth 12 oz Rover is a remarkably balanced lifestyle staple. Crafted from durable 18/8 kitchen-grade stainless steel, it relies on double-wall vacuum insulation to deliver extreme hot and cold temperature retention. This condensation-free design ensures your office desks, car cup holders, and kitchen counters remain perfectly dry throughout the day. A crystal clear lid utilizes a secure rubber gasket and stopper to confidently prevent spills as you navigate a busy morning commute or step out for afternoon errands. To protect the quality of your custom design and keep it a seamless part of your daily routine, we recommend hand-wash only.
    Shipping Details

    Orders Over $74.99 qualify for FREE SHIPPING. Excludes orders containing hard, soft, lunchbox and backpack style coolers and gear bags.

    Orders below $74.99 qualify for $9.95 Flat rate ground shipping*

    Orders containing coolers and gear bags are calculated using negotiated rates from UPS or USPS.

    To avoid exuberant shipping costs for our customers, all products included with a cooler or gear bag sale will be excluded from the cost of shipping.  This means you ONLY pay the cost of shipping your cooler or gear bag!

    Orders received after 3pm Central will begin processing on the next business day.

    *Free & Flat Rate Shipping is valid only for shipping addresses in the Contiguous US (excludes AK,HI)
    No customization, No problem.
    Mammoth 12 oz Rover Tumbler
    Mammoth 12 oz Rover Tumbler
    Mammoth 12 oz Rover Tumbler
    Mammoth 12 oz Rover Tumbler
    FREE SHIPPING on orders over $74.99
    10% OFF your first order | Use code: NEW10

    Why Mammoth?

    • Veteran Owned

      Proudly operated by a veteran-owned company.

    • Multi-Day Ice

      Keeps ice for days, not hours.

    • Lightweight Builds

      Ergonomic designs you can actually carry and use daily.

    • Roto-Molded Tough

      Double-walled build with freezer-grade gaskets and stainless steel hinges.

    FAQs

    Are customizations dishwasher safe?

    To keep your design looking its best, we recommend hand-washing with mild soap and warm water. Engraved pieces are especially worry-free (wash-away!), but hand-washing protects printed designs from the harsh heat and detergents of a dishwasher. Avoid abrasive scrubbers, and your drinkware will look great for years.

    Do you review orders for errors or typos?

    We do not review designs in detail, as there are many opportunities during the order process to verify the details of your order and artwork before submitting.

    Orders are assumed to be correct as placed, though we do reserve the right to make any corrections we do happen to catch based on our best judgment. We may also reach out to you via e-mail or phone number (if provided) to address any issues that prevent us from continuing the production of your order.

    Will my design fade, peel, or scratch over time?

    Built to last. Engraved designs are cut right into the material, so they'll never fade or peel — they're as permanent as the product itself. Printed designs are cured for a durable, vibrant finish that holds up to everyday use. With normal care, your customization is made to go the distance.

    Can I return a customized product?

    Because each piece is personalized just for you, custom items can't be returned or exchanged for buyer's remorse — they're one of a kind. That said, we stand behind our work completely: if your order arrives damaged or there's a production error on our end, reach out within 30 days and we'll make it right with a replacement or refund.

    When will my order ship?

    Every order is made just for you at our shop in Austin, TX — engraved, printed, and packed under one roof. Most orders ship in about 6 business days, and many head out the door in as few as 3. For the most accurate timing, check the message on the product page (right above the color selection) or in your cart — that's the real-time estimate for your item. One thing to know: if you add a proof at checkout, the review-and-approval step can add up to 3 days before your order ships. Once shipped, most of the lower 48 sees delivery in 3–4 days, and you'll get a tracking email the moment your order is on its way. Whenever we can get your order out faster, we will.

    Reviews