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Osprey Packs Manta AG 20L Backpack

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    12 Reviews


    Go lighter and smarter.

    Step out the door and onto the trail with everything you need for a long walk in the woods tucked into the Osprey Packs Manta AG 20 Hydration Pack. The smallest in the Manta series, it still provides the full set of features, just in a lighter, more compact design. Women-specific shoulder straps, hip-belt, and torso sizing provide a precise fit and enduring comfort, while plentiful pockets and organizing features keep everything tidy and conveniently accessible. It also includes a 2.5 liter reservoir to handle your hydration needs on long treks, and its Anti-Gravity suspension system supports and stabilizes your load so you barely even notice you're wearing a pack.

    The Anti-Gravity suspension system uses a combination of different design elements—a LightWire frame, mesh back panel, BioStretch shoulder harness, and AG hip belt—to distribute weight, enhance breathability, and achieve a comfortable fit, no matter how far you roam. The included reservoir also has a hose with a magnetic sternum strap bite valve so you can take quick sips on the go. The main compartment offers room for an extra layer, lunch, and other trail accessories, and dual upper and lower compression straps help you keep your load compact. A helmet attachment loop lets you hook up your brain bucket when you go on climbing or biking missions, and the integrated rain cover can be easily deployed when an unexpected storm rolls in.

    • Includes Hydralics LT 2.5L reservoir with bite valve
    • QuickConnect hose attachment
    • High-tenacity and ripstop fabrics
    • LightWire frame
    • BioStretch shoulder harness
    • Anti-Gravity AG hip belt
    • Dual upper and lower compression straps
    • Integrated removable rain cover
    • Fleece-lined sunglasses pocket
    • Item #OSP004Y

    Tech Specs

    [main, bottom] 210D nylon, [accent] 100D nylon ripstop
    20L (1220cu in)
    Waist Belt
    Hydration Compatible
    Reservoir Included
    yes, 2.5L
    front panel
    [external] 1 zippered slash, 1 mesh front, 2 mesh side, 2 zippered hipbelt, 1 zippered front, [internal] 1 mesh
    Helmet Carry
    Trekking Pole Carry
    Rain Cover
    Weight Capacity
    10 - 25lb
    22 x 12 x 13in
    Claimed Weight
    2lb 10oz
    Recommended Use
    hiking & camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    So awesome I got two!

    • Familiarity: I gave it as a gift but have feedback to share

    I got two of these, one for my husband and one for my dad, who are both big guys. Both are over 6' and weigh 200+ lbs. They both love the pack, it fits super well, the hip straps are right where they should be and the pack is bigger than I thought it would be! They like how sturdy the pack is for a 20L pack, it has good shoulder, hip and back support. The ventilation on the back is pretty awesome! Will update with photos at a later time once they put them through the wringer!

    Great day pack for heavy loads

    • Familiarity: I've used it several times

    This is a stellar pack that looks a bit bigger than what you might expect a 20L pack to look. That's because the weight and gear sits very close to your back and doesn't puff out as much, allowing for a lighter feel to your day pack weight. It has a ton of side pockets and compartments for all the little things you want to have on a day hike. I got this as a birthday present for my dad who takes literally everything with him on day hikes (or into the grocery store for that matter) and he loves it. Comes with hydration so you don't need to get that additionally and really is versatile in what it can offer.

    Osprey Packs Manta AG 20L Backpack

    • Familiarity: I've used it once or twice and have initial impressions

    This is a great daypack if you're going on a longer day hike and need to carry a little extra with you. I was able to fit my sweatershit and camera in the pack with plenty of space to spare. Also holds 3 l of water which is a plus.

    Great daypack!

    • Familiarity: I've put it through the wringer

    Love the size and comfort of this pack. I take it with me on every day hike, and it is comfy on 18 plus miles of trail time, loaded down with water, snacks, and extras. I tend to overpack, and this has not disappointed with its comfort and ability to handle whatever I throw in it.

    Amazing Day - Pack

    • Familiarity: I've put it through the wringer

    I use this on all my long day - hikes and I tend to bring a lot of things. This pack holds perfectly to my body and the large back panel keeps my back nice and dry while hiking. I love most that there are many straps to really synch down everything. I can easily strap down my extra layers on the outside of the pack as I hike. In addition the water reservoir works great. The only issue is that the water pipe is a little difficult to clean sometimes and it turned a weird yellow color after I washed it a few times. Still my favorite day pack.

    Everything you need for a day hike

    • Familiarity: I've used it several times

    I purchased two Osprey Manta AGs (one 28L and one 20L) to share across my family. We are planning on hiking the Grand Canyon north rim to south rim in one day (24 miles) and looking for day packs to handle all the necessary items for such a hike. The Manta AG line has it all! These packs are beautifully made, durable, and so comfortable with the anti-gravity suspension.

    Items I like are:
    trekking pole attachments
    lightweight frame with compression straps
    waist belt is very comfortable
    stretch mesh water bottle side pockets
    zippered pockets on the  waist belt
    high quality materials
    and, my favorite, the magnet on the hydration mouth piece!

    Keep up the good work Osprey!
    A happy satisfied customer.

    Exceeded my expectations

      I have several Osprey packs but was looking for something more comfortable than my Tallon series packs I also wanted a hydration pack where the feature is built in and not an hybrid like the Tallon where it is difficult to remove the hydration bladder. The Mantra 20 seemed like a great choice. It shares the same suspension as the Atmos series. I loaded the pack with 15 pounds of clothing,food and water. The pack helped me carry the weight on my hips. My shoulders never tired. My back stayed cool due to the suspension. Highly recommend this pack.

      Hands down the best Hydration pack ever

      • Familiarity: I've used it several times

      This thing has it all and does it all. Fits like a charm as well. don't leave home without it. This is the best hydration pack on the market, IMO.

      Best Hydration Backpack

      • Familiarity: I've put it through the wringer

      I use this back ALL the time. Hiking, biking, and eve taking my kids to Lagoon. It is a small size, but can still fit a decent amount of storage. The water pack is a great size and stays nice and cool in the backpack. I would buy this over and over again.

      It's got my back

      • Familiarity: I've used it several times

      I have the osprey atmos ag and love it so when I found out there was a hydration/day pack with the AG technology I had to have it. And I wasn't surprised to find I love Manta 20 AG too. Incredibly comfortable and makes a heavy load spread evenly and allows air flow. Great pack.

      Perfect gift

      • Familiarity: I gave it as a gift but have feedback to share

      This was a gift to my husband and he just Loved It! Everything about the Osprey Manta AG 20 Hydration Pack was what he was looking for! Ready for a hike!