The 28mm Flip Cap is an upgrade for Stow bottles and the 150 ml SoftFlask. It has a cover to keep out dust and dirt and a high-flow valve for easy drinking. Not every model fits, so check yours below.
| Product | Compatible? | How to tell |
|---|---|---|
| Stow bottle, 2020 and newer | Yes | "Filter Compatible" icon on the back |
| Stow bottle, 2019 | No | No "Filter Compatible" icon |
| SoftFlask 150 ml (SF150) | Some | Remove the cap and look for small raised markings on the threads. Markings = compatible. |
| SoftFlask 250 ml (SF250) | No | — |
2020 Stow Bottles - Our 2020 Stow Bottles are compatible but our 2019 models are not. To determine if you have a 2019 or 2020 model, look at the back of the Stow and find the Filter Compatible Icon. If your bottle has this icon, then it is compatible with the 28mm Flip Cap. If the FIlter Compatible Icon is not present, the 28mm Flip Cap will not fit properly and is not compatible.
Softflask 150ml - Identification on our SF150 Softflask is a little more difficult but it can still be determined by removing the top cap and taking a very close look at the threads. To identify if your softflask is compatible, look for visible markings on the threaded nozzle of your flask:
Raised features circled above indicate that your flask is compatible. If the markings are not present, then your flask is not compatible.
Softflask 250 - Unfortunately, the SF250 is not currently compatible with the 28mm flip cap.