Prep Series — coming soon
The 40 oz.
A larger single container — 40 oz (1.2 L) — built on the same Prep Series lid system, in its own colorway.
It is in development now. Join the list and you will hear when the first run is coming — and every signup counts as a vote that helps decide how many we make.
- 40 oz (1.2 L)
- Prep Series lid system
- Coming soon
Be first in line
Leave your email and we tell you the moment the 40 oz has a date — and you are on the founders' list for the launch offer and the $300 giveaway.
Every confirmed signup is automatically entered into our launch giveaway — one $300 SEIDO voucher. No purchase necessary. Official rules.
Available first
The 27 oz 3-pack leads.
The first Prep Series product to reach Amazon.com is the 27 oz (800 ml) three-pack — microwave-safe by design, dishwasher-safe, SGS tested. The 40 oz follows it.
See the 27 oz 3-pack →