HydriamX 350ml Collapsible Flask – 42mm

Jump to: Our Verdict / Features / Specifications

The HydriamX 350ml is a commendable choice for those seeking a lightweight, packable, and resilient water bottle.

CNOC Outdoors says: 

The HydriamX is a soft, collapsible, reusable drinking flask made in our eXtra durable, thicker TPU.

Like the VectoX, the HydriamX is capable of holding hot liquids, making it the perfect vessel for your warm beverage of choice. Whether it holds your favorite Après-ski cocktail, gets tucked into your sleeping bag as a hot water bottle, or just gives you extra durability, the HydriamX is the extra tough, ultralight flask you’ve been looking for.

The HydriamX comes in three different volume sizes, allowing you to fully customize your set up to your needs. All three sizes feature a tapered design that allows them to easily slide into the pocket of a running vest. The back includes markings for measuring out liquids while cooking or mixing your favorite camp cocktail.

Using the same 42mm thread as the 42mm Vecto, the 42mm Hydriam is compatible with filters like the Katadyn BeFree, allowing for filtering on the go during long runs or fastpacking trips.

Our Verdict

The CNOC Outdoors HydriamX 350ml Collapsible Flask is a versatile and durable solution for trail runners who wish to run with as little weight as possible. Crafted from robust TPU, it withstands hot and cold liquids, making it suitable for various drinks. However, the flask’s 350ml capacity may be too small for anything other than a quick drink. Its collapsible design allows it to roll up compactly when empty, saving valuable pack space.

The flask’s tapered shape comfortably fits into running vest pockets. Its 42mm threaded opening is compatible with popular water filters like the Katadyn Befree, facilitating on-the-go filtration. At just 31 grams, it adds minimal weight to your kit.

– Reviewed by Ultralight Outdoor Gear

Features

• Rolls up small when empty.
• Extra durable, with the ability to hold hot liquids.
• Tapered design to easily fit in running vest pockets.
• 350ml, 500ml, and 750ml volume size options.
• Tethered cap
• Attaches to filter with 42mm thread, such as the Katadyn BeFree.
• Robust and durable, utilizing the same material as the VectoX. 
• FDA approved and BPA, BPS, and BPF free.

Please note: TPU is a porous material and so is not completely smell free after production. Please clean and air prior to use.

Specifications

• Weight: 31g
• Capacity: 350 ml / 12 oz
• Packed size: 4 x 2.5 x 1.5 in / 10 x 6 x 4 cm
• Trail size: 6.5 x 4 in / 16 x 10 cm

Material & Construction

• Bladder: TPU 
• Cap: PP

Help & advice:

• What does BPA Free Mean?