Slipstream
100% metal. 0% plastic. Engineered for cyclists.
The only bottle made purely of metal: no plastic lid, mouthpiece, straw, or seals.
Coming summer 2027.
Slipstream sets the new standard.
100% metal construction.
Slipstream contains zero plastic or silicone. Zero microplastics. Zero PFAS. Zero forever chemicals.
Seals without seals.
Patent pending technology enables Slipstream to prevent leaks without the use of polymer seals that all other bottles rely on.
Grade 1 Titanium body and lid.
The ultimate choice for purity and strength, Grade 1 Titanium is the only material that touches your drink. Slipstream is completely taste-free and won't retain flavor from sugary or electrolyte drinks.
Precision engineered.
Created by a former SpaceX engineer to deliver unparalleled quality and reliability. Manufactured on 5-axis CNC machines to micron-level tolerances.
Hassle-free cleaning.
With minimal part count and no disassembly required, every surface can be easily accessed and cleaned. Say goodbye to gunk hiding behind seals and hard-to-reach crevices.
Built for the bike.
✓ Fits in most frames and bottle cages.
✓ Single-walled to minimize weight and maximize capacity.
✓ Wide opening to easily pour drink mixes.
✓ Large mouthpiece to maximize flow rate.
✓ Integrated dust cap useable with one finger.
✓ Easy to clean after long days in the saddle.
One-handed hydration.
Most cycling bottles treat dust caps as add-ons that not only cost extra but are also awkward to use. Slipstream's dust cap seamlessly integrates into the design for effortless, one-finger opening.
Remarkably light.
At just 166 grams, Slipstream is the lightest 25 oz metal cycling bottle on the market. When filled to capacity, Slipstream is only 10% heavier than a full 25 oz plastic cycling bottle.
Hardware built for precise problems.
Established 2025 in Los Angeles
Message from the founder
I've been riding bikes my whole life.
As my passion for cycling grew, I realized that drinking microplastics from cheap plastic bottles was the norm. Trying countless metal alternatives left me dissatisfied by the user experience and how they still had complicated plastic lids, mouthpieces, and straws.
While working with cryogenic valves and metal-sealing technologies at SpaceX, I knew there had to be a way to engineer a simple bottle with zero plastic. A product that could set the new standard for bottles across the market.
Slipstream is our first release, aimed at fixing cycling bottles. We're working hard to launch soon and deliver a truly outstanding product.
Jonathan Huang
Founder & CEO at Anacapa
Guiding Principles
Safety first.
We ensure our products surpass the latest health and regulatory requirements. Before launch, Slipstream will be independently tested and certified.
Less is more.
We obsess over making our products as simple as possible. Slipstream has undergone countless iterations to reduce complexity and minimize part count.
Function defines form.
Our focus is on creating features that solve real problems. Every design choice on Slipstream is derived from real-world functional requirements.