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Unisex thermos flask Kalsten

Regular price $90.99 $232.00 SAVE $141.01 (61% OFF) Sale price
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High-Quality Unisex Thermos Flask by Kalsten

Experience the perfect combination of design and functionality with the unisex thermos flask by Kalsten. This elegant and stylish thermos is ideal for any lifestyle, keeping your drinks hot or cold for hours.

  • Premium Materials: It is made of durable stainless steel and features a protective outer layer that not only looks good but also feels great in your hand.
  • Insulated Technology: The double vacuum insulation ensures that your drink maintains the perfect temperature, whether you're taking hot coffee or refreshing water.
  • Compact Size: With its sleek design, the thermos fits into nearly any bag, making it perfect for on-the-go.
  • Easy to Clean: The wide opening allows for easy cleaning and filling of the bottle, making it ideal for daily use.
  • Eco-Friendly: Reduce your plastic consumption with this reusable thermos – good for you and our planet.

The unisex thermos flask by Kalsten is the perfect companion for travel, sports, or at the office. Buy now and enjoy drinks at the perfect temperature!

Free standard shipping on all orders. No minimum purchase.

  • Ships to: United States
  • Processing: 1–4 business days (Mon–Fri)
  • Transit: 5–10 business days
  • Total delivery time: 6–14 business days
  • Order cut-off: 5:00 PM CET

You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.

See our full Shipping Policy.

You have 14 days from delivery to request a return.

  • Email support@open.shop with your order number to start a return.
  • Items must be unused, complete, and in their original packaging.
  • Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
  • Damaged, defective or incorrect items: we cover all return and replacement costs.
  • No restocking fees.
  • Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
  • Refunds are issued within 7 business days of inspection.

See our full Return Policy.

Questions about your order or our products? We're happy to help.

Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands

Email: support@open.shop

Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM CET (excluding public holidays)

We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.

For quick answers, visit our FAQ page or use our Contact Form.