# 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking

Stay hydrated and perform at your best with this **5L ultra-lightweight running backpack**, designed as a **hydration vest pack** for marathons, trail running, cycling, and outdoor training. Its ergonomic design ensures comfort without slowing you down.  
🏃 Built for endurance athletes.

Crafted from **breathable, sweat-resistant mesh fabric**, it offers excellent ventilation to keep you cool during intense workouts. Lightweight construction ensures you barely notice it’s there.  
💨 Comfort that moves with you.

The **5L capacity** includes multiple compartments for essentials like energy gels, keys, and phones, along with dedicated hydration storage. Perfect balance between size and utility.  
🎒 Compact yet practical.

Comes with **two 500ml soft flasks** and a **2L hydration bladder**, ensuring you stay refreshed throughout your runs or bike rides. Easy-access design lets you sip on the go.  
💧 Hydration without interruption.

The **adjustable chest and waist straps** provide a secure, bounce-free fit for maximum stability even during high-speed movement.  
💪 Stay focused, stay supported.

Whether training for a marathon, hitting mountain trails, or cycling long distances, this **hydration backpack** is a reliable companion for peak performance.  
🌟 Designed for athletes who go further.

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## 📦 Package Includes

_Package Includes_

-   1 × 5L Ultra-Light Running Hydration Backpack
    
-   2 × 500ml Soft Flasks
    
-   1 × 2L Hydration Bladder
    
-   1 × Adjustable Chest Strap System
    
-   1 × Waist Support Strap
    
-   1 × User Guide
    

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## ❓ Frequently Asked Questions (FAQ)

Q: What is the capacity of the bag?  
A: It has a **5L capacity** with space for hydration and essentials.

Q: Does it include bottles?  
A: Yes—comes with **2 × 500ml soft flasks** and a **2L bladder**.

Q: Is it lightweight?  
A: Absolutely—it’s designed for ultra-light running and cycling.

Q: Can it prevent bouncing while running?  
A: Yes—**adjustable straps** ensure a secure, bounce-free fit.

Q: Is it breathable?  
A: Yes—made with **ventilated mesh fabric** for airflow.

Q: Suitable for marathons?  
A: Definitely—perfect for **long-distance running and races**.

Q: Can it be used for biking?  
A: Yes—it’s great for cycling, hiking, and outdoor sports.

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## ⚙️ Technical Specifications

Feature

Description

Material

Breathable Mesh + Nylon Fabric

Capacity

5 Liters

Hydration System

2 × 500ml Soft Flasks + 2L Bladder Included

Strap Type

Adjustable Chest + Waist Straps

Weight

Ultra-Light (~0.6 lbs / 280g)

Ventilation

Sweat-Resistant Mesh Panels

Dimensions

40 × 25 × 10 cm (Approx.)

Resistance

Water-Resistant & Wear-Resistant

Use Cases

Running, Trail Running, Cycling, Hiking

Durability

Reinforced Stitching for Outdoor Performance

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## 🔒 The PulinGO Promise

🔄 **30-Day Returns** – Hassle-free exchanges/refunds for complete peace of mind.  
📞 **24/7 Support** – Always available to ensure your training is smooth and stress-free.

## Details

- **Price:** 59.95 USD
- **Vendor:** PulinGO
- **Type:** Running Hydration Backpack
- **Tags:** aliexpress, cycling hydration rucksack, marathon hydration pack, running hydration backpack, trail running vest, ultra-light running gear

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| and 2 500ml 2L | 59.95 USD | In stock |

## Images

- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking
- 5L ultra-light running hydration backpack – trail running vest pack with 500ml flasks & 2L water bladder for marathon & biking

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> Source: [PulinGO](https://www.pulingo.com/products/5l-ultra-light-running-hydration-backpack)
> Updated: 2026-05-21