One universal tube. Swap your lid. Size your base. Build the exact bottle you need — every time.
Every section shares the same thread pitch. The lid screws onto the mid, the mid screws onto the base. Swap any piece, anytime.
Every connection uses the same thread pitch. The lid screws onto the mid, the mid screws onto the base. You can even stack two mids together for double capacity.
The lid and mid chamber share a 3.2" outer diameter — a clean straight cylinder. This is your core tube that holds your drink.
The base module comes in standard (3.2") or narrow (2.5") diameter. A tapered adapter ring connects the narrow base to the mid — perfect for tight cupholders.
The lid threads on with the same universal connection. Choose the drinking style that fits your day — and swap it whenever you want.
Built-in arch handle for one-handed carry and clipping to bags. Flip-top spout underneath. Grab it and go.
Push-button flip reveals a built-in straw for sipping without tilting. Lock it closed for leak-proof transport.
No frills. Clean flip-top with wide mouth for easy filling and ice. Lightest, most durable lid option.
The mid chamber is the core of every HydraStack — double-wall vacuum insulated and threaded on both ends. Choose your grip style.
Sleek, straight-walled chamber with no external features. Fits every cupholder and bag pocket. The everyday workhorse.
Same insulated chamber with an ergonomic side handle molded in. Perfect for hot drinks — grip without the heat. No sleeve needed.
Same diameter, taller chamber for all-day hydration. Holds 50% more liquid without changing your lid or base.
Same mid chamber, same lid — the base module controls the bottom profile. Pick the one that fits your life.
Tapered adapter steps down to a slimmer cylinder. Fits compact car cupholders that full-size bottles can't.
Same width as the mid — seamless tube. Sealed storage compartment for vitamins, keys, or cash. Fits most cupholders.
Full diameter, extra tall. Maximum liquid capacity for all-day hydration without changing your lid or mid.
Built-in rechargeable heating element keeps coffee and tea at your ideal drinking temperature for hours.
Pick your lid, base, and color for each section — the preview updates live.
Lid + mid share a 3.2" diameter. The base adapts to your cupholder.
Food-grade metal throughout. No plastic taste. Built for life.
Double-wall mid chamber — 24hr cold, 12hr hot.
Rechargeable heating element keeps drinks at your ideal temp.
Grab the starter set or build your own — every piece sold individually.
Everything you need to start — Classic Lid, 16oz insulated Mid Chamber, and Standard Base. A fully functional vacuum-insulated water bottle, ready to go out of the box.
Swap, upgrade, or expand — every piece sold separately.
Add-ons and extras that work with any HydraStack setup.
Check out what other HydraStack users have created and shared.
Let us know what you think about HydraStack.