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  • Osprey Packs - Manta 36 Hydration Pack - 2075-2197cu in -

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  • Osprey Packs - Manta 36 Hydration Pack - 2075-2197cu in -

Osprey Packs Manta 36 Hydration Pack - 2075-2197cu in

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Large Hydration Packs (900+ cu in) we have in stock.

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11 Reviews


Thoughtful construction for enduring comfort.

Osprey decked out the Manta 36 Hydration Pack with all the thoughtful features that grace the rest of its Manta series and gave the pack a large 36-liter size for epic day hikes and super-light overnighters. Stuff all your needs and wants into its capacious main compartment and plentiful pockets, and marvel at how comfy and light your load feels with the AirSpeed suspension system and BioStretch harness. Tons of ventilation and padding reduce sticky sweat, and the hydration system with stabilizing HydraLock and magnetic valve holder keeps your whistle wet, so you can keep on trucking from sunup until sundown. 

  • AirSpeed mesh backpanel supported by LightWire frame incorporates side vents so you don’t get bogged down by the sweaties and ridge foam to keep your back happy
  • BioStretch harness features perforated EVA foam with large holes for enhanced breathability and comfortable stretch lined with soft, breathable spacer mesh
  • Stretch sternum strap has magnetic hose clip for quick and easy access to life-sustaining water
  • Mesh-covered BioStretch built-in hip-belt transfer and stabilizes load, breathes via perforation, and features a modified, straight ErgoPull closure
  • Wide panel access to main compartment makes quick grabs hassle-free; full-length side zipper adds accessibility; large front pocket with mesh organizer and shove-it pocket stores smaller and frequent-use items right where you want them
  • Rugged and light 70 x 100D nylon shadow creek and 600D polyester fabrics withstand outdoor wear and tear
  • Integrated rain cover comes out when the clouds let loose
  • Ample 3L Hydraulics Reservoir features an integral framesheet to keep water close to your body and prevent barreling, a ridig handle for easy insertion into pack, and wide-mouth cap for easy filling and cleaning
  • MPE film in reservoir ensures taste-free water and is durable enough to handle hot water
  • Hydration sleeve allows direct access via zipper for loading in a hurry
  • Zippered stretch mesh hipbelt pockets secure small, quick-access items, stretch mesh front and side pockets let you quickly stash extra gear, and zippered, embossed sunglasses pocket protects your eyewear
  • Dual side compression straps keep load lean and close to body for a stable haul
  • Helmet attachment loop gives you a spot to hang your climb, bike, or ski helmet while not in use
  • Stow-on-the-Go loops secure your trekking poles out of the way when not needed
  • Item #OSP0299

Tech Specs

70 x 100D nylon, 600D polyester
Reservoir Volume
100 oz
1 stretch mesh front, 2 zippered hipbelt, 1 zippered sunglass, 2 stretch mesh side
yes, BioStretch
Locking Bite Valve
Claimed Weight
[S/M] 2 lb 4 oz, [M/L] 2 lb 6 oz
19 x 11 x 13 in
[S/M] 2075 cu in, [M/L] 2197 cu in
Recommended Use
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

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Hydration Bladder makes this useless

    I have 2 hydration packs: the Osprey Manta 36 and a CamelBak Rim Runner. I originally only had the Camelbak but decided to get another hydration pack a a couple of years ago because my girlfriend kept wanting to use my CamelBak. I love my other Osprey packs so I really wanted to love this hydration pack. The magnetic clip and back frame were all appealing to me. I didn't even mind that the back frame limited the amount of storage space in the bag. I decided to pull the trigger and ordered this pack.

    I immediately regretted it. The pack itself is perfectly fine, but the hydration bladder makes this pack absolutely useless. The bladder has to be closed a very specific way or else it will leak. I learned that the hard way after taking my pack out of the trunk only to find out that half of the 3 liters of water had leaked out. Since then, I have to hold the bladder upside down to find out if I have it sealed correctly or not. Do a quick google search and you'll see that plenty of people have this problem.

    I had spent too much money on this pack to just throw it away or buy another one so I just kept using it. That is until the cap on the hydration bladder stopped turning. I don't know what happened, but the the blue ring around the cap started rubbing up against the cap in a certain way that causes too much friction. This makes it impossible to open or close the cap without significant effort. After this happened, I had had enough with the pack and just threw it in the garage.

    I'm only writing this review now because while cleaning out the garage, I came across this pack again. I decided to clean it up and give it another go, only to get so frustrated with the non-turning cap and be reminded about why I threw it in the garage in the first place.

    I've loved all Osprey packs I've owned throughout the years, but the hydration bladder makes this pack absolutely useless. Needless to say, I'm sticking with Camelbak.

    Excellent Pack

    • Familiarity: I've used it several times

    Osprey always delivers in my opinion and for light day packs, bike rides and any activity where youre carrying maybe 30lbs or less, this is a great pack - light weight, well organized, with a 3L hydration systems that is well thought out and doesn't cut into your storage space.

    Awesome bag

    • Familiarity: I've used it several times

    This bag has really impressed me in it's quality and ingenuity. I replaced the Manta 20 with this because I couldn't get a full set of clothes and shoes in it, and this size has been much better for that size load and more. It's comfy, I've been out all day with it with no issues of discomfort. It's smart, the pockets are in great spots and the variety gives ample storage space for delicate items, or dirty ones in the expandable "pocket". Highly recommend


    • Familiarity: I've put it through the wringer

    I love this bag. I have used it as a daypack from short hikes to all day affairs. This pack just sits so well on my back. They engineered the air speed system to distribute the weight so perfectly that even heavyer loads in this pack feel light. I highly recommend this bag.

    Gobblers muddy descent

    Owned this bag for almost six months now and love it. 5'2" tall. 157lbs female (didn't realize I bought the man's pack) but love it all the same. Chose this pack originally due to largest capacity. Always in the mindset of being prepared (especially as a solo female hiker) I love that this pack carries my myriad of essentials and I love the 3ltr bag. Decided to finally write a review after I hosed it down today after an awesomely muddy hike and discovered it was a breeze to clean.

    Gobblers muddy descent

    Excellent choice

    • Familiarity: I've used it several times

    This Osprey Manta 36 hydration pack is the nicest product I have found. I have a friend that has the same pack and he likes it so much that I had to get one and I like mine very much also. Although the construction is first rate it is much lighter than my old pack and the hydration unit is first rate. Very comfortable to wear and the ventilation between the pack and your back makes this pack a joy to use. Perfect for day hikes. I also wear it on my adventure motorcycle when I do not want to install the side cases.

    Awesome bag

      I bought this bag for day to day commutes and to take on day hikes. I wear it around the city with about 15 pounds of stuff (books, laptop, etc). I love the weight distribution with this bag, and i hardly feel it on my shoulders. Its got pretty good storage space, and it collapses pretty small so it could probably be used only as a hydration unit if you scrunch it all down. I have done some hiking (nothing too long), the bag performed as i expected and was comfortable the whole time and the hydration system works fine too. Only complaint (minor one) is the waist strap, near the clasp the strap is pretty thin so a little less comfortable (in that area alone) than other other bags i have used. Again only taking about the waist strap, the bag as a whole is awesome one of the best i've had.

      nice backpack

      • Familiarity: I've put it through the wringer

      easy to use and well thought out bag. the pack stays off your back and keeps you cool while distributing weight well. room inside of the main compartment is minimal due to the shape of the water bag. that is the only downside. the hydration system is nice and the magnet is a beautiful touch. the pockets are good sizes and in the right spots. good size medium backpack. i would buy it again

      Great multi-sport daypack

        This is an awesome choice if you're looking for a versatile day pack. The compression straps are designed really well, so the pack is very comfortable with both small and large loads - no more issues with gear sloshing around if your pack is only half full. I've used this pack with little more than the hydration bladder and stuffed to the brim and it's always comfy. If you're debating between sizes, I wouldn't hesitate to go for this pack again - you get the added versatility of more storage space for the shoulder seasons/ longer days while still being able to cinch things down when you have an empty pack.

        This pack is a great size for mountain biking since it isn't so tall that it will hit you in the back of the head/ neck. The suspension/ back panel is great for hot summer days as the body of the pack curves outwards from your back leaving an open space for air flow. Even with the pack fully loaded, there is still plenty of air in the back panel to keep things cool.

        Perfect for day hikes and biking!

        • Familiarity: I've put it through the wringer

        I love using this backpack for my everyday bike ride to school and for various trips around town. It's just big enough to fit everything I may need( water, food books, laptop, pens, etc.) The water reservoir is a nice addition to this pack and really comes in handy when biking because it's almost hands free.The rain cover is another swell addition to the pack just incase of in climate weather. The ventilation system for your back is remarkable and truly makes a difference in the summer when back sweat becomes annoying. Overall this is a great buy If you are looking for a versatile medium sized backpack.

        I am trying to determine whether i should...

        I am trying to determine whether i should buy the S/M or the M/L. I cannot find this pack in any stores so i can not try out the different sizes. I am about 5'9" and weigh about 155. Which would you recommend?


        How thick is the padding on the waist belt...

        How thick is the padding on the waist belt and shoulder straps ?

        Is the waist belt really load bearing or mainly stabilizing against sway.