UltraLight 5L Hydration Running Vest – Zero-Bounce Trail Pack for Long-Distance (Unisex)

Compact 5L vest for short-to-mid distance trail runs, featuring adjustable fit, 11 pockets, and included 500ml soft flasks for hassle-free hydration.
Regular price $49.99 Sale price $49.99 Regular price $59.99
Sale $10.00 (16.67%)
Shipping calculated at checkout.
Color: Black
Size M
In stock

Run Farther, Train Smarter – Zero Distractions, Total Control

Weighing just 208g (7.34oz), the Haimont UltraLight 5L Vest redefines minimalist agility for ultramarathons, mountain ascents, and endurance trail runs. Built with AI-recommended ergonomics and 360° safety systems, this vest eliminates bounce, friction, and hydration hassles—so you conquer every climb with confidence.

Features

UltraLight, UltraDurable

Crafted from 208g friction-defying nylon, it’s 30% lighter than standard vests yet packs 5L of organized storage across 11 pockets—perfect for gels, phones, and emergency gear. The pack includes storage for two 500ml flasks (included).

Uphill-Proof Stability

  • Expandable chest/waist straps lock water reservoirs in place during steep climbs
  • Bite valve magnetic docking prevents spills and snags on technical terrain
  • 3D ergonomic construction eliminates chafing over 50KM+ efforts

Safety Engineered for Wild Adventures

  • 360° reflective strips for visibility at dawn, dusk, or night
  • Quick-dry back panel with airflow channels cuts sweat buildup by 50%
  • Dual-position trekking pole attachments secure gear in seconds

Adapts Like a Second Skin

The patented adjustment system expands with your body and layers—no mid-run stops to tighten straps.

SPECS

  • Volume: 5L
  • Weight: L: 221g/7.8oz, M: 208g/7.34oz
  • Weight including accessories: L: 289g/10.19oz, M: 72g/9.59oz
  • No. of Pockets: 11
  • Size: M/L
  • Reflectivity: 360° reflective strips
  • Materials: Polyester, Nylon

Washcare

  • Do not bleach
  • Do not dry clean
  • Do not tumble dry
  • Do not machine wash
  • Do not iron
  • Hand wash cold (30°C)

Delivery Information

HAIMONT understands that getting your items in a timely manner is important to you, so we process your order swiftly. Please note that because we make every effort to ship your product as quickly as possible, once the shipping process begins, we are unable to make any changes to your order.

All orders are estimated to ship typically within 1 to 2 business days after the order is placed. Shipping days exclude weekends and holidays.

Currently, we are offering Free Standard Shipping everyday on Orders Over $40. Our standard shipping method is ground shipping. We will ship your order via any of the major mail carriers, including UPS, FedEx, DHL and the United States Postal Service. At this time we are unable to provide the option to choose your carrier of choice.

Orders shipping to APO/FPO addresses will be unavailable. We do not ship to PO Boxes. If your package is not able to be delivered, it will automatically be returned to us. Email us at service@haimont.com to figure out your options for re-delivery!

Standard Shipping

  • 3 to 7 Business Days to the US from US warehouses
  • 7 to 14 Business Days to Asia and Europe
  • 10 to 25 Business Days to Other Areas

Expedited Shipping

  • 1 to 3 business days to the US, additional $15 needed
  • 5 to 10 Business Days to Asia and Europe, additional $20 needed
  • Other areas are not available

International Shipping (Except United States)

  • Your package may be subject to the customs fees and import duties of the country to which you have your order shipped. The recipient is responsible for all duties and taxes incurred. Haimont cannot determine these fees during the checkout process.
  • It usually takes 7 - 25 business days for international orders to be delivered. The product gets handed to your local post office on arrival in your country and as such, delivery times will vary by country depending on the efficiency and expediency of your postal service.
  • You cannot cancel the order if the product is already shipped out. In this case, please send us a return request when you receive the parcel.

Tracking Your Order

Once your order leaves our warehouse, a tracking number and tracking link will be emailed to you. Tracking codes take one business day to activate.

Backordered Items

If an item is out of stock you will be contacted as soon as possible. You will have the option of waiting for the back ordered item, splitting the shipment and having all the in-stock items sent immediately, choosing a replacement item or canceling the backordered item.

Please review our Return & Refund Policy for more detailed information.

Returns Policy

We strive to provide the best customer experience. If for any reason you are not satisfied with the product you purchased from haimont.com, you may return it within 30 days of delivery for a full refund minus any shipping charges. We just ask that the product be in brand new condition with the original tags still attached for full credit.

Please review our Return & Refund Policy for more detailed information.

UltraLight Performance
UltraLight Performance

Only 208g for speed & comfort

Adjustable Fit
Adjustable Fit

Side buckles adapt to all body types

Hydration Made Easy
Hydration Made Easy

Includes 2x500ml flasks (bladder optional)

Safety Built-In
Safety Built-In

Reflective strips + emergency whistle

Product benefits

haimont

Trail-Tested 5L Vest in Action

Watch athletes train and race wearing the vest, showcasing stability, breathability, and hydration in real trail scenarios.

Athlete style inspiration

Frequently asked questions

The Haimont 5L Vest is perfect for short to medium-distance training runs or races from 10km to 25km (approx. 1.5-3.5 hours). For strong runners in good conditions with ample aid stations, it can also handle distances up to 30km.

While it's possible, we don't recommend it. The 5L vest is designed for short distances using the front soft flasks. A bladder takes up crucial space, creates poor weight distribution, and offers less convenient access.

With its adjustable side straps, the Haimont 5L vest offers a secure fit for a wide range of body types, from petite women to taller men. It's ideal for any runner seeking a lightweight solution for short-to-mid distance trail running.

It's a total all-rounder! The 5L vest is incredibly versatile, perfectly balancing lightweight performance and functionality, making it ideal for both racing and daily training. For races, it's your speed tool. For training, it helps you simulate race-day conditions.

Prioritize a secure, bounce-free fit. The vest should feel like a second skin, with no chafing or movement. For storage, ensure it easily holds two 500ml soft flasks upfront and has organized space for gels, your phone, and keys.

It's an ideal choice for beginners! The Haimont 5L vest strikes the perfect balance between a "lightweight feel" and "safety preparedness." It carries essential gear without overwhelm, helping new trail runners build safe habits.

A belt wins on absolute weight. However, the vest often feels lighter because it distributes weight across your torso, minimizing bounce. If minimal weight is your goal for simple runs, choose a belt. For most runs over 10km or on trails, the 5L vest wins on overall comfort and stability.

Not at all! Instability comes from poor fit or packing, not small capacity.​

Pro Tip for Stability:​​

  • ​Get the Right Fit:​​ Ensure the vest size matches your torso length. Tighten all straps for a snug fit.
  • ​Pack Smart:​​ Put heavy items high and to the front (flasks, phone). Light, bulky items (jacket) go in the back.
  • ​Fill the Space:​​ Use a light item like a jacket to fill space and prevent shifting.

Customer Reviews

Based on 43 reviews
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(41)
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S
Stella Kidman
Absolutely LOVE this pack! Best one I own!

I own quite a few running/hiking packs and hydration bladders and this is by far my absolute favorite! You can tell there was great attention to detail put into every little feature.

P
Preston Slate
Good vest!

Love this hydration vest for my long runs! Doesnt move around much and has plenty of pockets for all of my things that I carry on longer runs.

G
Giese Veronica
Perfect

This is great to run with. This fits me perfectly. This holds my AirPods and a small key. It has a pouch for hydration packs in it, I have purchased them but havent tried wearing them yet with the vest. Incredibly durable little vest.

J
Julean Stewart
Very lightweight! Loved it

Nice little backpack for hiking. It comes with one big pouch and two small ones. Pretty spacious for what it looks like. Very lightweight and has adjustable clips for more comfort! I loved it

C
Christophe Momboisse

UltraLight 5L Hydration Running Vest – Zero-Bounce Trail Pack for Long-Distance (Unisex)

J
Josh Johnston
Great storage and adjustable straps!

This water pack is the perfect size for running short or long distances. I am able to fit my IPhone Max into the pockets and I am able to tighten the straps to fit my body well. I do recomcomend cycling water through it a few times, I added Dawn just to help with disinfecting and removing the taste of the plastic? It is not heavy even when filled and was a great price.

C
Carlos Gonzalez
Perfect water pack, super practical!

I love the many pockets, each of them spacious, and the water container itself is large and closes beautifully with how its designed (opening folds and locks with a plastic liner you just have to slide in or out). I love this pack! Material is of quality as well.

D
Dion

I ordered this vest for an upcoming ultramarathon. Unfortunately, the shipping took longer than expected due to a stock issue, but Haimont’s customer service was absolutely amazing.
They handled everything quickly and professionally, offered a fair refund, and communicated with kindness the entire time.
Very satisfied with the service, and I’m looking forward to trying the vest soon. Thank you!

M
Me

Very good quality and super fast shipping!

A
AnneMarie Bergeron

Dries quickly when it gets wet. No problems after washing it a few times.