Drinkware
About This Product
This Pure Titanium Capsule Flask prioritizes material integrity and functional efficiency for the modern workspace. By utilizing pure titanium, we offer a flask that is chemically stable and resistant to the lingering odors often found in traditional metal containers. The 150ml capsule form is sized explicitly for shirt-pocket carry — the optimal capacity for a focused espresso, green tea, or tincture without adding bulk to a briefcase or jacket.
The food-grade PP (polypropylene) cap seals the flask securely without imparting taste or odor, complementing the inert titanium liner for a fully neutral drinking experience. The compact capsule silhouette projects a sense of reliability and modern professionalism — making it a solid choice for corporate gifting programs targeting executives, frequent travelers, and professionals who carry their standards with them.
| Capacity | 150ml (5 oz) |
| Dimensions | Ø51mm × 128mm (Ø2.0" × 5.0") |
| Net Weight | 107g (3.8 oz) |
| Material | Pure Titanium Body; Food-Grade PP Cap |
| Thermal Performance | Double-Wall Vacuum; 6+ Hours Retention |
| Packaging | Standard Color Box |
How does pure titanium hold up for long-term daily use?
Pure titanium is exceptionally resistant to corrosion. Unlike steel, this capsule flask will not rust or degrade when exposed to acidic beverages over time, ensuring a reliable, long-lasting flask for intense daily use.
What material is the cap and does it affect taste?
The cap is made from food-grade PP (polypropylene) — a material chosen specifically for its neutral taste and odor profile. Combined with the inert titanium body, the entire drinking system remains fully taste-neutral, even with acidic or aromatic beverages like espresso or green tea.
Does the 150ml size fit in a shirt pocket?
Yes — the 150ml capsule is explicitly sized for standard shirt pocket carry. The compact capsule geometry minimizes protrusion, making it a discreet and professional option for meetings, commutes, or desk use without requiring a bag.
What are the options for bulk logo customization?
We recommend Laser Engraving. This process creates a sharp, high-contrast permanent mark on the titanium surface that is resistant to wear and peeling, ensuring consistent brand visibility throughout the product lifespan.
Does pure titanium affect the taste of coffee or tea?
No. Pure titanium is chemically inert and non-reactive with acidic beverages, coffee, and tea. It leaves zero metallic taste or odor — a key advantage over standard stainless steel flasks, which can impart subtle metallic notes over time.
Pure Titanium vs Titanium Alloy
This flask uses commercially pure titanium (Grade 1–2, >99% Ti) — not Ti-6Al-4V alloy. Pure titanium is softer (HRC 20 vs 36) but has superior corrosion resistance and zero aluminum content. For a drinking vessel, pure titanium is the correct choice: no aluminum leaching, no vanadium exposure, and the lower hardness actually allows better forming of the capsule profile.
Food-Grade PP Cap: Material Selection Logic
Polypropylene (PP) is chosen over alternatives because: HDPE leaches more readily under heat; silicone absorbs flavors over time; PTFE (Teflon) is expensive and difficult to form into threads. PP withstands boiling water (100°C, well within its 160°C continuous service temperature), is mechanically durable for daily threading, and is certified food-safe under FDA 21 CFR 177.1520 and EU 10/2011.
150ml: The "Double Espresso" Capacity
The 150ml capacity is not arbitrary — it's calibrated to the standard double espresso (60ml) plus room for hot water dilution (Americano, long black). This positions the flask as a coffee ritual accessory rather than a general hydration container. For corporate gifting, this specificity creates a more compelling story than a generic "small bottle."
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