Limited-Time Spring Deals. Up to 15%OFF!

Close

Waterfly Utility Max 4.0 Fanny Bag

    Waterfly Utility Max 4.0 Fanny Bag

      Product form

      $24.99

      SKU: NB01-01

       Limited-Time Spring Deals

      10% OFF Discount Code: SPRING10

        • Visa
        • Mastercard
        • American Express
        • PayPal
        • Apple Pay
        • Google Pay
        • Maestro
        • Union Pay
        • Diners Club
        • Discover
        • JCB
        • Guaranteed secure & safe checkout.

        Shipping & Returns

        Free standard shipping & free 30-day returns & 1-year limited warranty. Learn more:

        Product Details

        POCKETS

        • Easy-access Pockets x 2
        One 4"H x 5.3"W front elastic-banded slip pocket with a quick-release buckle.
        One 3.5"H x 7"W internal slip pocket.

        • Zippered Pockets x 3
        One 5"H x 5.3"W front zippered pocket.
        One 5"H x 8"W x 2"D main compartment zippered pocket.
        One 5"H x 8"W internal mesh zippered pocket.

        • Side Pocket x 1
        One 5"H x 3"W water bottle pocket.

        BENEFITS

        • Stable Water Bottle Holder: This meticulously crafted water bottle holder, designed for peak performance, features an adjustable compartment (bottle not included) that expands to fit 18 oz/500 ml bottles. The integrated elastic cord and bottom retention strap provide superior stability, preventing slippage and ensuring a secure hold during vigorous activity.
        • High-Quality Material: Crafted from durable nylon, this hip bag features meticulous workmanship and reinforced stitching, ensuring lasting quality. The thick and breathable back padding provides optimal comfort and keeps your waist dry, while an integrated reflective strip enhances visibility for nighttime activity.
        • Well Organized & Spacious: This thoughtfully designed fanny pack features multiple, strategically placed compartments, ensuring optimal organization for all your essential items. It provides secure storage for credit cards, currency, mobile devices, keys, and other running and travel necessities, such as energy bars, snacks, headphones, and sunglasses.
        • Adjustable Waist Strap: This water bottle waist pack is equipped with an adjustable waist strap, engineered to provide a customized fit for diverse body types. The robust and user-friendly buckle ensures effortless on and off, allowing you to remain hands-free while engaging in running, hiking, traveling, jogging, and cycling activities.

        Craftsmanship
        • High sewing standard with a minimum of 8 stitches per inch for reinforcing every seam, making the bag more durable and doubling its lifespan.

          This process increases the tensile strength of each seam by at least 30%, making the seams less prone to breakage under a minimum tensile force of ❶7 kilograms. Compared to traditional processes, the lifespan of WATERFLY bags is extended by at least 50%.
        • Reinforced connection points at all stress areas.

          + Straps Reinforced Stitching.



          + Internal Easy-access Pocket Reinforced Stitching.


        • Built with platinum-grade buckles engineered for a minimum of 50000 use.

          Each buckle is designed to support a minimum of 45 kilograms of force and built to withstand temperature as low as -20 degrees Celsius / -4 degrees Fahrenheit without compromising its strength and durability. With an average usage of 15 times per week, the buckles can last up to 70 years.
        • Built with platinum-grade SBS zippers engineered for a minimum of 10000 use.

          Each zipper runs smoothly, ensuring a seamless opening and closing experience. Each zipper is designed to withstand a minimum of ❺10000 pulls and offers at least three times the lifespan of ordinary zippers. With an average usage of 15 times per week, the zippers can last up to ❻14 years.

        ❶ ❷ ❸ ❹ ❺ ❻: The data is based on WATERFLY laboratory testing. Actual performance may vary depending on environmental factors and specific application.
        Specs

        VOLUME
        • 120 IN³ / 2 L

        DIMENSIONS
        • 5H x 12W x 2D IN.

        WEIGHT
        • 0.42 LBS.

        FABRIC
        • MAIN: Nylon
        • LINING: Polyester

        BELT ADJUSTABLE RANGE
        • 16.5" to 52"

        In The Box

        1 × Waterfly Utility Max 4.0 Fanny Bag

        Care Guide

          Recently viewed products.

          You may also like.

          Why buy on the Waterfly Store.

          • Free Shipping

            Free shipping worldwide.

          • Free and Easy Returns

            Free 30-day returns for a full refund.

          • Official Waterfly Store

            100% genuine & brand-new guaranteed.

          • 1-year Limited Warranty

            Buy with confidence & enjoy worry-free use.

          • Free Shipping

            Free shipping worldwide.

          • Free and Easy Returns

            Free 30-day returns for a full refund.

          • Official Waterfly Store

            100% genuine & brand-new guaranteed.

          • 1-year Limited Warranty

            Buy with confidence & enjoy worry-free use.

          • 1 / 4

          Customer Reviews

          Based on 25 reviews
          96%
          (24)
          4%
          (1)
          0%
          (0)
          0%
          (0)
          0%
          (0)
          H
          H.G.
          very handy bag

          The WATERFLY Fanny Pack Waist Bag is a great addition to our walks and hikes. This bag is comfortable to wear and has room for all the things needed for a long walk. The angle of the water bottle helps distribute the weight of the water bottle and make reaching for it easier if its on your backside. There is also a loop that can slide over the end of the water bottle to make sure it doesn’t fall out if you are bouncing around. There is plenty of room for your phone, keys, and snacks.

          M
          M.S.
          Great for Travel & Day Trips!

          I got this fanny pack for my wife for her upcoming trip to Japan and for everyday walks and outings. It’s a great size—not too bulky, but with plenty of pockets and storage space for essentials. The padded support makes it comfortable to wear, and the built-in water bottle holder with an elastic cord to keep it secure is a really nice touch. She loves how functional and well-designed it is and can’t wait to put it to use. Highly recommend!

          W
          W.T.
          Fanny Pack Waist Bag

          I ordered this Fanny Pack Waist Bag for when so when working outside I could carry my phone, water and whatever else I needed to carry.This fanny pack is great for hiking and it has a water bottle holder and is very comfortable to wear and looks nice (I mean as nice as a fanny pack can look). It is worth every penny and comes in 5 different colors and is made of Nylon and should be handwashed.

          A
          A.C.
          Impressed

          I’ve always refused to wear a fanny pack but I’m getting ready to go to universal studios and my kids have grown out of strollers so here we are. I was on the fence and sure I’d end up sending it back, but love this fanny pack its stylish, adjustable the fabric is thick and the color is perfect and I’m such a fan of being able to put a water bottle in it. There’s quite a few little pockets and bigger pockets. The strap clips seems durable and well-made I’m excited to use this.

          L
          L.S.
          A Comfortable Bottle Pack with a Large Storage Capacity

          This waist pack water bottle holder by Waterfly is intelligently designed and a notch above many others that I've tried and used over the years. Much of the design of bottle packs in general are tailored for specific outdoor activities but vary depending on the kind of activity. For me, I have used waist bottle packs for inline skating over longer distances, typically 20 miles or more, in the often harsh climate of Florida. For me, having enough extra room for snacks and gels as well as the bottle itself is important. This also allows me to comfortably carry my phone, keys, tools and other accessories. This isn't necessarily what everyone will be looking for but if you spend 90mins or more outside on a biking trail or similar, it's great to have a pack like this that is lightweight and comfortable to wear as well as having the capacity to comfortably hold all your stuff. The main storage pocket on this is one of the largest I've tried and allows me to comfortably store my phone without a struggle to get to other stuff. I also like the slightly angled bottle holder which makes grabbing and stowing my bottle on the move relatively easy. It's a bit of snug fit for my preferred insulated Polar bottles but it does keep it very secure. There's an additional adjustable elastic cord to secure it even more if needed. I also like the internal compartments which help to keep your stuff organized for better accessibility. The adjustable elastic waist band also makes this very easy to fine tune for a comfortable fit. At the current price of $25.99, this is my new favorite waist bottle pack so I'll give it a solid 5 stars.

          K
          K.C.
          Third time the charm

          This is actually my third Waterfly bag I purchased. I typically walk 8 miles a day and wanted something big enough to carry my phone, compact rain poncho, AirPod case, first aid items, cash, house key and hopefully water.My first bag was the WATERFLY Fanny Pack Waist Bag: Fannie Pack 2 Water Bottle Holders Lumbar Belt Hiking Walking Running Jogging Camping Large Woman Man. While this is a good bag and it comfortably fit all my necessary items, it was just too big and bulky for me and it turns out I only needed one slot for water bottle.In July I then decided to forgo the water bottle holder and got the WATERFLY Fanny Pack for Women Men Water Resistant Small Waist Pouch Slim Belt Bag with 4 Pockets Lightweight Crossbody Chest Bag Fit All Phones, 11.02 x 2.1 x 4.3 inch. I decided to carry a collapsible water bottle that I was then attach to the belt via carabiner when it was empty. While I was able to fit all my necessary items in the bag it was a tight fit, especially for my phone (iPhone 14 Plus). Also, I discovered that carrying around my water bottle was not ideal.When I saw this bag, I was hoping the third time is the charm. I love the water bottle holder and all my necessary items fit more comfortably in this bag. I even now carry a compact tote bag inside this bag if I decide to stop by the grocery store. The bag fits comfortably and is not too bulky. On the downside, I much prefer the stitched logo options on the other two bags to the larger printed logo on this one. Also, the stitching on the top of the bag near the bottle holder looks stretched out. I thought it was a one off and exchanged it but the second bag is much the same.Overall I guess this as close as I can get to my ideal bag

          D
          D.T.
          Perfect for Short Hikes

          This pack is pretty versatile. It's the perfect size for short, 1 hour ish, hikes with my dog. I can fit my essentials, wallet phone keys, in there along with a bottle of water for me and my pup while we hit the open space trails near our house. The pack is pretty well made, too. It's a nylon construction but we'll made and adjustable enough that either my wife or I can wear it around our waists. So Far, so good.

          M
          M.
          good all around fanny pack

          I've been using fanny packs vs. purses for a while now since I hate how purses get in the way, slip down my shoulder, etc. But, I often have a lot of stuff I need to carry so regular sized packs dont' always work. This one is larger, and it has multiple pockets, so it's easy to keep things organized. I can easily fit my purse, phone, 2 epi pens, and a snack. The bottle holder is a huge plus for me, too. This is perfect to carry your things on a hike, long walks, or just on a day long outing.Comfortable to wear, and it looks pretty good for a fanny pack. I wore it around my waist, but also as a cross body bag when my lower back started to get sore. Easy to change the straps, and the bottle stayed put even when worn across body.

          H
          H.
          Large, well-made fanny pack

          I got this for a trip I'm taking that will involve some light hiking, so I wanted something to put my phone, credit cards, car key, snacks, drink, and a few other things in. I'm pleased to report this will definitely do the trick!It is incredibly roomy, and hopefully my photos with the rulers will show that. I have a gigantic Pixel 7 Pro phone with an enormous case on it (clumsy), and there is zero doubt I can put this in with a billfold/small wallet, some granola bars or nuts, keys, etc. It feels very solidly constructed, with padding on the back of the main part. And the material is just thick overall. I was pleasantly surprised it was not flimsy. I showed the inside so you could see both how big it is, and also the compartments on the inside.The soda bottle in the picture is actually a 20 oz, and you can see that well over half of it slides into the sleeve, so you don't have to worry about it toppling out. The green bottle is slightly larger, though I didn't measure the ounceage. You could likely fit a taller bottle in it, as well.The price *seems* a tad steep, but I think with this, you get what you pay for. Right now it's $26 with a 25% off coupon, so just under $20. For that price, I would definitely buy it, particularly if you need something with a large capacity. If you have a small phone and don't plan to carry much more in the pack, you can potentially go with something smaller, but for me and my bulky phone and snacks, this is it.

          t
          t.
          Great for Hikes

          This bag works great for hiking and running. The pocket is roomy enough to hold my cell phone and a snack. I like how the water bottle holder is angled. It makes it easier to pull out the bottle while I'm on the move.The straps are adjustable for a tight fit. It's a little bulkier than I like for running, but it's comfortable. The materials are sturdy and of decent quality. I can't find anything I dislike or that could be improved.

          Copyright © 2025 Waterfly Inc. All rights reserved.

            • Visa
            • Mastercard
            • American Express
            • PayPal
            • Apple Pay
            • Google Pay
            • Maestro
            • Union Pay
            • Diners Club
            • Discover
            • JCB

            Login

            Forgot your password?

            Don't have an account yet?
            Create account