The Boundless Voyage Titanium Hip Flask holds 200 ml and weighed just 75 g on our scale. It’s the smaller, wider sister of the 250 ml titanium flask we reviewed earlier. We take vodka in it on longer trips, for our vodka pasta on the road, and as a backup drink for when the beers run out. I paid $45 for it.
What You’re Getting
A hip flask made of 99.8% pure titanium, with no lining or coating inside, engraved with the Boundless Voyage logo and “200ML Titanium”. It has a knurled screw cap on a titanium arm, and it comes with a stainless steel funnel and a cotton drawstring pouch. It’s about 110 × 95 mm, and on our scale the empty flask weighed 75 g.
What we like
- Pure titanium: no metal taste
- Safe to leave spirits in
- 75 g on our scale
- Cap on a titanium arm
- Silicone seal: no leaks
- Curved to sit in a back pocket
What we don’t
- Pricier than a steel flask
- Shows fingerprints and smudges
- 200 ml is a personal size
Quick Specs
| Spec | Details |
|---|---|
| Brand | Boundless Voyage |
| Model | Ti3061D |
| Capacity | 200 ml |
| Material | 99.8% titaniumUnlined |
| Colour | Titanium |
| Weight | 75 g |
| Size | 11 × 9.5 cm |
| Included | FunnelCotton pouch |
Pure titanium and taste
Because it’s pure titanium with nothing on the inside, the flask doesn’t react with what you put in it. Unlike some stainless steel flasks, it leaves no metallic aftertaste, so the vodka tastes like vodka. High-proof spirits, acidic liquors or wine won’t corrode or pit it either, so it’s fine to leave a drink in the flask for the length of a trip. And because there’s no lining, you can warm it directly over a camp stove or fire on a cold night, but only with the cap off and only with water or a non-alcoholic drink. Never heat it sealed, and never heat spirits: alcohol vapour catches fire easily. The outside is a satin finish that’s hard to scratch, but it does show fingerprints and smudges, so it needs a wipe now and then to look clean.
Cap and seal
The cap screws onto a threaded neck and sits on a solid titanium arm, so when you unscrew it, it swings aside instead of rolling away into the dark. The top is knurled, so it’s easy to grip with cold or wet hands. Inside the cap, a food-grade silicone ring seals it, and it doesn’t leak.
Filling with the funnel
The neck is narrow, so you need the funnel to fill it without spilling. The funnel that comes with it is stainless steel and sits neatly in the neck. Pack it in the pouch with the flask, as pouring straight from a bottle is a messy job.
Size and weight
At 75 g empty, it’s barely there in a jacket pocket or the lid of a pack, and much lighter than a traditional steel flask. The body is curved in a U shape, so it sits flat against your hip or in a back pocket. It’s small next to a water bottle: 200 ml is a personal size, enough for a few drinks by the fire or the vodka for a pasta, not a night for the whole camp. It isn’t insulated, so it’s for spirits at air temperature.
200 ml vs 250 ml flask
Boundless Voyage makes two titanium hip flasks we’ve tested. The 200 ml is the shorter, wider one; the 250 ml flask is taller and narrower and holds a bit more. Both are pure titanium with an attached cap, and both come with a funnel and a pouch.
This review Boundless Voyage 200 ml |  Boundless Voyage 250 ml | |
|---|---|---|
| Capacity | 200 ml | 250 ml |
| Weight | 75 g | 83 g |
| Shape | Short and wide | Tall and narrow |
| Price paid | $45 | $48 |
| Our score | 9.2 | 9.1 |
Conclusion: Boundless Voyage Titanium Hip Flask (200 ml)Conclusion
The Boundless Voyage 200 ml titanium hip flask weighed 75 g on our scale. It’s pure titanium with no lining, so it adds no metal taste and you can leave spirits in it, the cap sits on a titanium arm so it can’t get lost, and a silicone seal keeps it from leaking. It costs more than a steel flask, shows fingerprints, and 200 ml is a personal size, but it’s just right for the vodka for our pasta on the road and a backup drink when the beers run out. I paid $45.
A 200 ml pure titanium hip flask with a cap on a titanium arm, a silicone seal, a funnel and a cotton pouch.
It weighed 75 g on our scale and adds no metal taste.
- Hikers
- Backpackers
- Campers
Yes, if you want a flask that's light and keeps your drink tasting right. I paid $45, more than a steel flask, but titanium won't corrode and it'll last.
