Ideal for backcountry day hikes, the Osprey Manta AG 28 hydration pack provides storage (1500+ cubic inches), houses an integrated 2.5L hydration system, and boasts an innovative, movement-mirroring suspension system. No longer do you need to settle for an ill-fitting pack in order to stay hydrated.
Osprey's Anti-Gravity Suspension system equips the pack with weight-carrying efficiency, breathability, and a contoured fit that’ll nearly make you forget you have it on your back. A broad-mesh, tensioned backpanel stretches seamlessly from the shoulder straps all the way out across the hipbelt. Though the pack maintains constant, responsive contact with the wearer, warm air can escape freely because of the separation caused between the mesh and the pack itself. Beneath the mesh, a lightweight aluminum frame provides support and distributes weight. Load lifter straps and an adjustable sternum strap further allow you to dial in fit. The Small/Medium Manta AG 28 is designed to best fit torso lengths ranging from 16”-19" and the Medium/Large size fits 18”-21” torsos.
Unlike traditional hydration bladders, the Osprey reservoir has welded baffles that minimize "barreling" by maintaining a more anatomical shape. Nestled within its own dedicated, externally-accessed compartment, the reservoir is locked securely in place, reducing the sloshing effect that many hydration pack users have come to accept as a necessary evil. The reservoir’s wide mouth is easily accessed through a patented, leakproof sliding closure that further adds speed and efficiency to refills that kids can even do themselves. An integrated PourShield makes the reservoir easy to fill and empty. An anti-microbial treatment prevents mold and bacteria from building up inside the reservoir.
In addition to a large main compartment, a sizable, zippered front pocket and zippered pockets on the hipbelt offer quick-and-easy access to essentials. Other features include a helmet attachment loop, a safety light attachment point, and an integrated rain cover to protect the pack in inclement weather.
The Osprey Manta AG 28 hydration pack is available in your choice of size and color options.
- Direct zip access hydration compartment
- Dual upper and lower compression straps
- Stow-on-the-Go trekking pole attachment
- Panel access to main compartment with an internal mesh pocket
- Heat embossed scratch free zippered slash pocket
- Helmet attachment loop
- Front panel stretch mesh pocket
- Blinker light attachment
- Integrated raincover
- Magnetic sternum strap bite valve attachment
- Dual access side stretch mesh pockets
- Dual zippered hip belt pockets
- Hydraulics LT 2.5L reservoir included
- Large zippered front panel pocket with internal mesh pockets
Best Use Hiking Access Panel Loading Warranty Limited Lifetime Volume Small/Medium: 1587 cu in
Medium/Large: 1709 cu in
Type Hydration Pack Sternum Strap Yes; Adjustable Maximum Weight 30 lbs Material 210D High Tenacity Nylon and 100D Nylon Mini Hex Diamond Ripstop Item Weight Small/Medium 2.6 lbs
Medium/Large: 2.69 lbs
Torso Adjustment n/a Hydration Compatible Yes; Hydraulics LT 2.5L Reservoir included Frame Material Aluminum Fits Torso Small/Medium: 16"-19"
Fits Waist Small/Medium: 26"-45"
Dimensions 22" x 13" x 12" Detachable Daypack n/a Other Raincover Included
Real Customer Reviews
Likes: Great support
- Overall Great Pack
Likes: Very functional, sturdy, and well equipped w pockets and straps. Easily stowed my fly rod as well. Would have given this a 5 star, but my reservoir came with a tiny hole in it.
Dislikes: Reservoir was faulty / leaking
- For me this is almost the perfect day pack. It has all the room I need in a 4 season pack.
Likes: Very comfortable
Plenty of storage
Dislikes: The waist belt pockets are a little to small for my phone.
- Top of the Line Daypack
Likes: Plenty of room. Great for winter hikes or when you’re packing for yourself and another. Love the water bladder that comes with it. The anti gravity suspension system makes it really comfortable.
Dislikes: Could use a bit more padding in the shoulder straps.
- Well Thought Out
Likes: Ventilation! My biggest problem with packs is how they rest against your back without an adequate ventilation flow. This pack definitely changes that, and is the main reason I purchased it. The handy trekking pole holders, deep side pockets, and padded waist belt all add to the comfort and convenience this pack offers.
Dislikes: Lack of straps at the bottom to tie off a tent, bag, or pad.
- Comfortable and feature rich
Likes: I was looking for a day pack replacement for my old Kelty Redwing 2650. I have a 20" torso and the Manta AG28 M/L size fits perfectly. The hipbelt is snug, sits on my hips properly, and the pockets fit snacks/phone/small camera. The stretchy outside pouch is good for quick access. The straps are well padded. The internal frame structure balances weight well, it feels light on my back. The side access of water bottle pockets is nice, but a 32oz nalgene only goes in 3/4. Hasn't fallen out yet, but hangs out a bit. Added rain cover & pocket are a big plus, haven't needed to use it yet. All stitches, straps, buckles, zippers are quality.
Dislikes: Minor nitpicking. Zipper for main compartment stops at the water bottle pockets, so access to bottom of the main is reduced. The plus of the comfortable hipbelt can be a minus because it is big and can get in the way. The pack is long/narrow/thin, so the base is small and the pack won't stand up when placed down.
- Perfect Pack in this Range
Likes: AG system, in itself is with buying the pack.. The confy hip belt. and built in pockets are the bonus
- Great medium sized all-in-all daypack.
Likes: water bladder, suspension system, breathability.
Dislikes: the hipbelt can be a little tight fitting but you get used to it.
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