Shatterproof clear Tritan flasks in silicone bumpers, leakproof and BPA free, two sizes and ten colors each, plus the Waypoint in powder coated stainless steel.
The Tritan flasks are molded from a clear rigid copolyester and dropped into a silicone bumper that takes the impact at the corners. That combination is what makes them shatterproof rather than merely tough, and it is why you can see the level without opening anything. In those two sizes there is no metal anywhere in the body, cap or bumper.
The 6 oz measures 3.8 by 1 by 4.3 inches and disappears into a jacket pocket. The 8 oz keeps the same width and profile and grows to 5.5 inches tall for a third more capacity. If it lives in a bag or a chair pocket, the 8 oz is the obvious pick. If it has to sit flat in clothing, take the 6 oz. Ten colors in each size.
The Waypoint is the steel answer to the same brief: an 8 oz body in 18/8 stainless with a powder coated finish that resists scratching and corrosion, silicone bumpers at top and bottom for grip and impact, and a threaded metal cap that seals. It gives up the clear body and the metal free build, and in exchange it looks like a traditional flask and shrugs off the kind of handling that marks a plated one. A silicone funnel comes with it.
The metal free Tritan build is sometimes read as a way past a bag check. It is not. Venues, stadiums and parks set their own rules about outside drinks and those rules apply whatever the flask is made of. What the material genuinely buys you is a flask that does not shatter on concrete, does not taste of metal and is not a problem near water.