If you're an existing customer of the 28mm Smartwater system, this is the place to purchase the brand new wide-mouth lid to use the tube with your Nalgene or Hydro Flask! The 63mm wide-mouth Nalgene is an industry standard and fits on Hydro Flasks, Takeya/ThermoFlasks and many more bottles.
The lid is also compatible with both the current model grey Smartwater adapter and the pre-November 2024 black Smartwater adapter!
In November 2025 I added a retention tether and carry loop option! You get pre-cut and pre-knotted cord plus a carabiner to add a retention tether and carry loop to the black lid*. With the lid attached it’s one less thing to lose, plus you can store the bottle with the lid off to keep mold down. The carry loop makes your life easier when you’ve got small hands and a big Nalgene, and it offers a place to carabiner the bottle to your pack so it doesn’t fall out!
*caveat - late-model Hydro Flasks and Camelbak bottles don’t have a lip for the tether. Check your bottle before purchasing!
If you're an existing customer of the 28mm Smartwater system, this is the place to purchase the brand new wide-mouth lid to use the tube with your Nalgene or Hydro Flask! The 63mm wide-mouth Nalgene is an industry standard and fits on Hydro Flasks, Takeya/ThermoFlasks and many more bottles.
The lid is also compatible with both the current model grey Smartwater adapter and the pre-November 2024 black Smartwater adapter!
In November 2025 I added a retention tether and carry loop option! You get pre-cut and pre-knotted cord plus a carabiner to add a retention tether and carry loop to the black lid*. With the lid attached it’s one less thing to lose, plus you can store the bottle with the lid off to keep mold down. The carry loop makes your life easier when you’ve got small hands and a big Nalgene, and it offers a place to carabiner the bottle to your pack so it doesn’t fall out!
*caveat - late-model Hydro Flasks and Camelbak bottles don’t have a lip for the tether. Check your bottle before purchasing!
