Questions, answered.

Yes. Every HydraStack module — every lid, mid, and base, in every generation we've made — shares the same universal thread pitch. A lid you buy today threads onto a mid from our first production run. That's the whole point of the system.

You can. Because mids are threaded on both ends with the same pitch, two 16oz mids stack into one 32oz tube. It gets tall — pair it with the Standard or XL base for stability.

Lids, mids, and the Narrow/Standard/XL bases are top-rack dishwasher safe. The Heated Base contains a battery and heating element — wipe it clean with a damp cloth instead, and never submerge it.

About 3 hours of continuous heating at the middle setting, or most of a workday if it only maintains temperature of an already-hot drink. It charges over USB-C in roughly 90 minutes.

The double-wall vacuum-insulated mid chamber holds cold for about 24 hours and heat for about 12 — and the Heated Base can extend hot drinks indefinitely while it's powered.

In the builder or shop, pick the rainbow swatch and choose any hex color. Custom coating adds $8.99 per section (so a fully custom three-piece build adds $26.97). Preset colorways — Stealth, Titanium, Arctic, Sand, Ember, and Alpine — are always included in the base price.

The Starter Set is a complete bottle — Classic Lid, 16oz insulated Mid Chamber, and Standard Base — for $29.99, about 40% less than buying the three modules separately. It's the recommended first purchase; every future module you buy threads onto it.

Absolutely — that's half the fun. Each section (lid, mid, base) has its own color picker in the builder, and the community lookbook is full of two- and three-tone builds for inspiration.

Flat $5.99 to the continental US on every order, no minimums. Full details — processing times, returns, and exchanges — live on the Shipping & Returns page.

Unused modules in original condition can be returned within 30 days. Custom-color sections are made to order and are exchange-only. See Shipping & Returns for the process.

Verification (a 6-digit code sent when you register) keeps community features honest and lets us send your order receipts and password resets to an inbox you actually control.

With an account you can save configurations from the builder, reload them any time, and optionally share them to the community gallery where other users can vote on them and load your build into their own configurator.

On the sign-in form, choose "Forgot Password?", enter your username and registered email, and we'll send a 6-digit reset code that's valid for 15 minutes.