Black · fits 32 and 48 oz Wide MouthBottle accessoriesBottle accessories
Keep the wide mouth. Narrow the sip.
Nalgene Wide Mouth Easy Sipper
Black · fits 32 and 48 oz Wide Mouth
Buyer feedback ↓A removable splash insert for the full-size Nalgene Wide Mouth opening.
- 32 / 48 ozCompatible bottlesEasy Sipper insert compatibility; not insert capacity
- Snap-inFitRemovable insert
- OpenDrinking holeCap still provides the seal
Amazon US · Black · fits 32 and 48 oz Wide Mouth · Retailer link
THE QUICK TAKE
Is it right for you?
This is useful if you like a wide opening for filling but a smaller opening for drinking. The insert reduces the exposed flow area without replacing the familiar screw cap.
Skip it for the smaller Nalgene Wide Mouth or a narrow-mouth bottle. The name alone does not establish compatibility. It also adds a part to remove and wash, and the drinking opening is not a leakproof lid by itself.
01 / BUYING NOTES
Before you buy.
02 / AMAZON REVIEWS
The buyers’ view.
Buyers of the black insert report less splashing and easier drinking, and one finds it easy to move between bottles. Seating can be finicky, though: another owner found that it sat properly in one bottle, needed slow lid tightening in another, and fell into a third when the lid was screwed on.
What buyers like
- fit289
- functionality259
- spill prevention164
- ease of use122
- drinkability91
Mixed feedback
- stability147
- Value for money117
Common concerns
- Size92
The small numbers are review mentions. Topics and sentiment are from Amazon’s customer-review overview.
Amazon US · Checked . Ratings may include other colors and sizes.
View source ↗03 / SOURCES
What the sources say.
Nalgene specifies the full-size Wide Mouth opening used on its thirty-two and forty-eight-ounce bottles. The smaller Wide Mouth bottle uses a different opening.
This item is an insert, not a replacement screw cap. The original cap remains necessary to close the bottle for carrying.
04 / COMPARE
Different priorities.
Choose the tradeoff that fits how you will use it.
Swipe to see every alternative →
THIS GUIDENalgene Wide Mouth Easy SipperBlack · fits 32 and 48 oz Wide Mouth |  ALTERNATIVEhumangear capCAP+Bottle cap adapter |  ALTERNATIVEHydro Flask Wide Mouth Flex CapBlack · screw-off cap | |
|---|---|---|---|
| Amazon price | $7.49 | $13.99 | $14.90 |
| Best for | A removable splash insert for the full-size Nalgene Wide Mouth opening. | A small drinking cap and large filling opening | A closed cap with a flexible carry strap for Hydro Flask Wide Mouth bottles, without a drinking straw to clean. |
| What changes | 32 / 48 oz · Compatible bottles | Replaces the original cap | Buy this if you prefer a simple screw-off closure to a straw |
| Tradeoff | Skip it for the smaller Nalgene Wide Mouth or a narrow-mouth bottle | Confirm the compatible bottle opening | Choose a straw or sipping cap if you want one-handed drinks without removing the lid |
| Explore | Read buying guide →Source ↗ | Read buying guide →Source ↗ | Read buying guide →Source ↗ |
About these everyday comparisons
Approximate comparisons to familiar objects: a bank card’s 3.37-inch long edge, a Letter sheet’s 11-inch long edge, or a US nickel’s 21.21 mm diameter / 5 g weight. Water comparisons exclude the container’s weight. Capacity comparisons describe volume, not exterior size or how food fits. Reference pictures identify the object; use the labeled ratio for the comparison.
05 / PRICE HISTORY
The price over time.
Nalgene Wide Mouth Easy Sipper · Black · fits 32 and 48 oz Wide Mouth · Amazon US
The chart legend identifies Amazon and new-offer prices when available. New offers can include marketplace sellers. Coupons, shipping and size/color selections can change the final price. Blank periods are missing observations, not a zero price.
06 / RELATED FINDS
A useful extra.
For the way you plan to use it.
Use the intended wide-mouth bottle.
Nalgene Wide Mouth
The insert is made for compatible Nalgene Wide Mouth bottles. Keep the original screw cap for closing and carrying the bottle.