Product Overview
The WATERFLY Small Lightweight Hiking Backpack is a versatile 20L daypack designed for outdoor enthusiasts, including both women and men who enjoy trekking, camping, travel, or daily adventures. Built for comfort and functionality, this compact backpack offers essential features like hydration compatibility, phone storage, and breathable support—making it ideal for light hikes, day trips, or urban exploration. Its lightweight construction at just 1.6 lb (720g) ensures ease of carry without sacrificing durability or performance in outdoor conditions.
Key Features
- Breathable Support Panel: The ventilated mesh back panel enhances airflow and reduces heat buildup, providing lasting comfort during extended wear on trails or while commuting outdoors.
- Phone Pocket Fit: A stretch shoulder pocket securely fits most large smartphones, including Pro Max–size devices, allowing quick access to your device while on the move.
- 2L Hydration Ready: An internal sleeve is designed to fit a water bladder up to 2 liters, complete with a hose port for convenient hands-free drinking—perfect for long hikes or endurance activities (bladder not included).
- Water-Resistant Fabric: Durable fabric repels light rain and splashes, offering everyday protection against moisture so your gear stays dry during unexpected weather.
- Pole Attachment Loops: Front loops securely hold trekking poles when not in use, keeping them stable and out of the way during navigation.
Technical Specifications
- Capacity: 20 liters
- Weight: 1.6 lb (720g)
- Dimensions: 19.7 × 11 × 5.7 inches (50 × 28 × 14.5 cm)
- Backpanel: Ventilated mesh with padded support
- Hydration Compatibility: Internal sleeve fits bladders up to 2L (hose port included; bladder sold separately)
- Fabric: Water-resistant, tear-resistant material
- Zippers: Dual-direction zippers with extended pulls for easy grip
- Safety Features: Built-in emergency whistle on chest buckle; reflective accents
- Shoulder Straps: Quick-adjust pull-tabs for secure fit
- Phone Pocket: Stretch design compatible with major large smartphones
- Attachment Points: Trekking pole loops, key clip, sunglasses loop
Benefits & Use Cases
This backpack is engineered for active lifestyles, offering practical organization and ergonomic comfort suited for day hikes, travel excursions, trail running, or even casual weekend getaways. The breathable backpanel and padded shoulder straps minimize fatigue by reducing pressure and heat buildup, making it comfortable to wear for several hours. Whether you’re navigating forest paths or exploring a new city, the multiple compartments keep essentials like keys, snacks, sunscreen, and electronics neatly arranged and within reach.
The inclusion of a dedicated hydration sleeve makes it an excellent choice for runners or cyclists who need sustained fluid intake during outdoor activities. The water-resistant fabric adds reliability in variable weather, ensuring your belongings stay protected from damp conditions. With reinforced stress points and high-quality zippers tested for over 8,000 smooth pulls, the backpack is built to endure repeated use across various terrains and climates.
Important Notes
- A water bladder is not included but is compatible with standard 2L sizes via the internal sleeve and hose port.
- The backpack weighs approximately 1.6 lb (720g), making it ultra-light for its size and function.
- Dimensions are approximate and may vary slightly due to fabric stretching or compression during use.
- Designed primarily as a daypack; not recommended for multi-day backpacking due to limited capacity.










Ventilated mesh back panel enhances airflow and reduces heat buildup for lasting comfort.

Stretch shoulder pocket fits most large smartphones, including Pro Max–size devices.

Internal sleeve fits up to 2L bladder with hose port for easy drinking (bladder not included).

Durable fabric repels light rain and splashes for everyday outdoor protection.

Front loops securely hold trekking poles when not in use.
Additional Design Highlights
The backpack includes several thoughtful details that enhance usability and safety. Dual zippers allow for two-way opening, giving you flexibility in how you access contents, while extended zipper pulls make gripping easier, even with gloves on. Quick-adjust shoulder straps feature pull-tabs for fast fitting adjustments, ensuring a snug and personalized fit throughout the day.
Safety is prioritized with a built-in emergency whistle mounted on the chest buckle—ideal for signaling help if needed in remote areas. Reflective accents along the seams improve visibility during low-light conditions such as early morning treks or evening commutes.
Organization is streamlined through dedicated spaces: a key clip prevents loss, a sunglasses loop keeps eyewear secure, and trekking pole attachment cords offer stable storage. These elements combine to support efficient packing and retrieval of frequently used items without rummaging through the main compartment.












Smooth two-way zippers with extended pulls for easier grip and quick access.


Pull-tabs allow fast and easy shoulder strap adjustment for a secure fit.


Built-in safety whistle on the chest buckle for added outdoor security.


Reflective accents improve visibility in low-light or nighttime conditions.




