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💦 Hydrate like a pro, conquer every mile with Nathan’s leak-proof 2L hydration bladder!
Nathan’s 2-liter hydration bladder is a BPA-free, durable water reservoir designed for running, hiking, biking, and obstacle racing. Compatible with all Nathan running vests and hydration packs, it features a high-flow bite valve, quick-release hose, and airtight seal to deliver consistent hydration without leaks. Lightweight and easy to clean, it ensures fresh, pure water on every adventure, backed by a lifetime warranty.







| ASIN | B00NOEC53O |
| Best Sellers Rank | #17,226 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #67 in Outdoor Backpack Reservoirs |
| Brand | Nathan |
| Brand Name | Nathan |
| Capacity | 2 Liters |
| Color | Clear |
| Customer Reviews | 4.7 out of 5 stars 465 Reviews |
| Global Trade Identification Number | 00717064910052 |
| Included Components | hydration bladder |
| Item Dimensions W x H | 5"W x 3"H |
| Item Type Name | NAthan 2 Liter Bladder |
| Item Weight | 0.16 Kilograms |
| Manufacturer | Nathan Sports |
| Manufacturer Part Number | 4552N |
| Material | Thermoplastic Polyurethane (TPU) |
| Material Type | Thermoplastic Polyurethane (TPU) |
| Model Number | 4552N |
| Number Of Pockets | 1 |
| Pocket Description | Utility Pocket |
| Product Dimensions | 5"W x 3"H |
| Sport | Running, Trekking, Hiking, Biking |
| Sport Type | Running, Trekking, Hiking, Biking |
| Strap Type | Shoulder Strap, Chest Strap |
| Tank Volume | 2 Liters |
| UPC | 717064865222 717064910052 |
| Warranty Description | lifetime |
I**S
Perfect Replacement For The Nathan Vapor Air Men’s Hydration Vest.
⁃ I purchased this bladder as a replacement for the previous one I used in the Nathan Vapor Air men’s hydration vest. (Size L/XL) ⁃ It is a direct fit to the Nathan Vapor Air vest pouch at the back. ⁃ Sadly, it doesn’t come with the magnetic hose magnet that connects the hose bite valve to the vest itself on the Vapor Air. I went to the Nathan website, chatted with a representative and the representative sent me, for free, a magnet together with a hose. Thanks Nathan for standing behind your products. ⁃ It comes with calibrations and has a maximum fill line beyond/past which you can’t fill. ⁃ The clamp that closes the hydration bladder together works well and it is airtight/watertight. No leaks whatsoever from the top. ⁃ Wash the bladder with a vinegar plus lukewarm water solution the first time you use it and immediately after use, each time. Hang it to dry as I have seen people complain about mold on older hydration bladders that were not aired out properly. If you use colored fitness fluids eg Gatorade, hydration solutions, clean and rinse it immediately after running/use as the bag will start discoloring/adopting the color of the drink/solution. ⁃ I have used it in 2 full marathons and 3 long training runs and it has performed well. I hope that it shall last long. ⁃ The bite valve works perfectly. After using another bite valve from another hydration bladder that leaked after a few uses, I appreciate how easy it is to use the Nathan bite valve. You don’t have to twist it regularly to get the right amount of fluids coming out. ⁃ It has a quick disconnect tube that ‘feels right’ when you are connecting or disconnecting the tube/hose from the bladder. ⁃ Since I wash and rinse it of its contents after every use, I am able to use different fluids and not taste them after switching them between runs on different days. The taste doesn’t linger like it does on many plastic items. (But you have to wash and rinse it first.)
P**N
Great hydration
I’ve used a Nathan pack for years with my MTB. I needed the replacement bag and it works great. Fit right in, clean, ready to use! The Water flow is consistent , it is durable and comfortable.
A**T
Much Easier to Open Than Twist-Off Styles
I purchased this bladder in 2022 and its going strong. Easy to fill, clean, and dry. The hose is easy to disconnect and re-attach. I'm purchasing two more to replace my CamelBak bladders which have become difficult to open and close as their plastic material aged. I'm very disappointed in the CamelBak bladder design which I had previously invested in the past. CamelBak carriers are nice, but the bladders are too difficult to open, and if not closed just right, they will leak. Other similar styles may be as good as these Nathan's, but the Nathen's work well for me so why change.
N**K
Great bladder
I needed to replace an older version of my Nathan bladder. This was an exact match, fits in everything I used in my pack. No leaks! The storage capacity is a full 2 liters and fits in everything I used it on. It's a little bit of a pain to clean the connections, but is still good.
A**R
Great bladder
This bladder has been great. I’ve been using it for a while now. I’ll throw it in my Solomon vest for trail running or my 17oz backpack for hikes. Fits perfect in both. Has the usual bladder taste, but nothing a mixture of water, baking soda, and lemon juice won’t fix.
C**.
Perfect
Perfect replacement reservoir for my hydration vest.
T**Y
Almost perfect
Easy to clean. Easy to use. Fits any back pack really. It’s better to just buy this instead of a whole water bladder set. Though there were some leaking during running, so put it in a bag to catch the water
T**N
Fits perfect
Perfect fit
N**S
Fast shipping
Exactly what it was said it was. Thanks
S**H
Perfect
Perfect for me, great easy to clean.
L**.
Nach 3 Läufen undicht, klasse!!!
Nach 3 Nutzungen fängt es an zu tröpfeln, richtig mies!!
M**S
2x defekt nach wenigen Läufen
An sich eine schöne Trinkblase. Leider war sie nach wenigen Läufen kaputt. Es kleines, kaum auffindbares, Loch an der Seite, wo kontinuierlich Wasser austropfte, sodass der ganze Rucksack durchnässt war. Beim Ersatzprodukt das gleiche Problem.
L**R
Turned yellow after first uaage, replacement does the same
Ordered it, used it once with water and it turned into this yellow looking color. Contacted Nathan support they assured me this is wrong. So I sent it back to be replaced as I thought it's a product ion problem got this instead which as you can see has the same issues.
Trustpilot
3 weeks ago
2 weeks ago