THERMOS BLUE
THERMOS (dark blue → light green) changes with the warmth it meets — deep blue at rest, light green where your hands wrap around it. The FROST shift, moved from your face to your hands. Double-wall vacuum insulation keeps whatever you pour hot or cold; the shell answers to you and the weather. Built for slow mornings, long rides and tea that has to survive the cold.
• Heat-reactive coating, sealed under a scratch-resistant protective finish
• 500 ml
• Double-wall vacuum insulation — 18/8 (304) food-grade stainless steel inner wall
• BPA-free polypropylene (PP) lid interior with an airtight silicone sealing ring
• Wash before first use · hand wash only · do not microwave
- Reacts to warmth — reversible color shift · keeps drinks hot or cold
- Free shipping · ships from Switzerland
- A Swiss label · est. 2025
Heat-reactive, colour-changing coating over stainless steel — it reacts to the warmth of your hands, while double-wall vacuum insulation keeps your drink hot or cold. See the description above for the full spec. Care: wash before first use · hand wash only · do not microwave.
500 ml capacity. Double-wall vacuum insulation — 18/8 (304) food-grade stainless steel inner wall. BPA-free polypropylene (PP) lid interior with an airtight silicone sealing ring. Wash before first use · hand wash only · do not microwave.
Ships from Switzerland to Switzerland, the EU, the UK and select destinations shown at checkout. Orders are prepared and shipped within 2–10 days; after dispatch, delivery takes around 1–2 business days in Switzerland, 4–10 across the EU and 10–15 internationally. Free shipping. Returns as per our policy; customs or import VAT may apply outside Switzerland.
Pre-orders: the times above don't apply to pre-order items — they ship after the production window shown on the product page.
Good to know.
Reversible — the shell shifts as it warms and returns to its base color as it cools.
Around body/skin temperature (~30–37°C). The warmth of your hands or warm surroundings triggers the shift, while the vacuum wall keeps your drink hot or cold inside.
Wash it before first use. Hand wash only, with mild soap and a soft sponge. No dishwasher, no microwave — that protects the heat-reactive coating.