Formosa Flask
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Formosa Flask

Premium borosilicate glass meets sustainable bamboo — your tea, perfectly tempered, wherever you go

$18.00per set
Ships within 24 hrs
✓ Double-Wall Insulated
✓ Sustainable Bamboo
✓ Infuser included

The Formosa Flask Story

Inspired by Taiwan’s celebrated tea culture, the Formosa Flask brings the elegance of loose-leaf brewing into your everyday life. Designed for clarity and simplicity, it lets you enjoy true flavor — whether you’re at home, at your desk, or on the move.

Its name pays homage to Taiwan’s historic title, Formosa — “the beautiful island” — a place where tea is not rushed, but revealed through mindful infusions. This flask captures that spirit in a modern form: clean lines, sustainable bamboo, and double-wall borosilicate glass that keeps your brew perfectly tempered.

A companion for slow tea and fast days alike — crafted to elevate every sip, wherever your journey takes you.

Specifications

Formosa Flask
Capacity 500ml
Material Borosilicate glass, bamboo lid
Care Hand wash recommended

What's Included

3-Piece Set
Everything included with your Formosa Flask
  • ✓
    Formosa Tea Flask500ml double-wall borosilicate glass bottle
  • ✓
    Bamboo LidSustainable, leak-proof seal
  • ✓
    Metal Tea InfuserFine mesh, removable for easy cleaning

Perfect For

Ideal occasions
  • ✦ Hot or cold tea
  • 💼 Office commutes
  • ✦ Travel days
  • ✦ Eco-conscious sippers

Frequently Asked Questions

It's crafted from double-wall borosilicate glass, which resists thermal shock and preserves clean, pure tea flavor. The sustainable bamboo lid and removable fine-mesh infuser let you brew loose-leaf tea properly, even on the go.
Yes. Borosilicate glass is designed for high temperatures and sudden temperature changes, making it safe for both hot and cold tea.
The flask holds 500ml — the ideal personal size for daily brewing at home, at work, or while traveling.
Add your leaves to the stainless steel infuser, pour in hot water, steep to taste, then remove the infuser. The double-wall insulation keeps your tea warm without the bottle getting hot to the touch.
The bamboo lid includes a silicone ring that forms a snug, leak-resistant seal. Tighten firmly and store upright for best results.
Hand washing is recommended to preserve the bamboo lid and maintain the clarity of the glass. The stainless steel infuser can be rinsed or washed normally.
Absolutely. The Formosa Flask works beautifully for cold infusions — just add leaves, fill with cold water, and steep in the fridge for 4–12 hours.
No. Borosilicate glass is non-porous and will not retain aromas, ensuring every brew tastes clean and fresh.
Formosa Flask
Formosa Flask 5.0★