Description
xCompact, capable, and crafted for daily life
The CS COSDDI 12 oz Stainless Steel Vacuum Insulated Tumbler in Tibetan Blue blends rugged durability with everyday practicality. The interior uses premium 304 stainless steel that remains taste-free and resists rust, while the exterior wears a calm Tibetan Blue finish for a versatile, on-the-go look. The lid features food-grade silicone, is BPA-free, and designed to seal securely. An airtight seal plus a built-in air vent helps control sipping flow, so you can drink with minimal spills as you commute, study, or enjoy a moment outside.
Key features at a glance
- Taste-free interior and rust-resistant stainless steel maintain beverage integrity over time.
- Airtight lid with an integrated vent supports smooth pouring and sipping, with a responsive seal to reduce leaks.
- 12-ounce capacity with a narrow body that fits most cup holders and keeps a comfortable grip.
- Slip-resistant bottom adds stability on desks, tables, and during travel.
- Versatile for hot coffee, tea, or cold drinks, at home, work, or outdoors.
Design details that fit into your routine
The two-click lid closure ensures a secure seal, helping you stay confident on the move. The tumbler is designed for hand washing; it should not go in the microwave, and the dishwasher is not recommended to preserve the seal over time.
Care and use for lasting performance
- Hand wash recommended to keep the finish and seal in top condition.
- Close the lid securely when transporting to prevent leaks in bags or car cup holders.
- Use across daily routines—from coffee breaks to campus study sessions to weekend trips.
Real-life benefits you might notice
Thanks to vacuum insulation, you may notice your hot beverages stay warmer longer and cold drinks stay cooler during your day. The compact size makes it easy to pack into a bag or tote for quick access.
Note: The tumbler is designed to provide practical, on-the-go sipping while avoiding guarantees. Environmental conditions and beverage type can influence performance.
Color and brand feel
The Tibetan Blue shade aligns with a calm, modern aesthetic and pairs well with casual and office wear. CS COSDDI emphasizes reliable hardware and thoughtful details for everyday use.
FAQ
Q: Is the CS COSDDI 12 oz tumbler leakproof?
A: Yes, the lid has an airtight seal and vent to control flow, helping prevent spills.
Q: Can I put this tumbler in the dishwasher or microwave?
A: It is designed for hand washing and is not microwave safe.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
- Choosing a selection results in a full page refresh.