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Fuse 12L

  • All SOURCE Hydration Systems are BPA and EA Free

Our mid-volume Fuse pack keeps you light on the trail, offering 3L/100oz Widepac Water Bladder along with 12L of cargo space divided in three separate compartments, including a padded pouch to protect your mobile. Since 2020 all our popular Fuse hydration packs are made from super-durable 210D Nylon fabric and Bluesign certified for sustainability. 

  • Raincover for this pack included
  • 3L SOURCE Hydration System included
Fuse 12L

Fuse Hydration Pack designed for biking

3L / 100oz Widepac Hydration System - 12L Cargo

A light weight mid-volume pack that keeps you light on the trail. 12 Liters of cargo is just what you need for a short ride or hike. Separated between three compartments, one of them padded to protect your mobile, cargo is easy to organize. A structured back system improves ventilation of the spine area of the back.

Fuse Hydration Pack Features

  • Lightweight fabrics 
  • Padded shoulder straps
  • Adjustable sternum belt with integrated whistle
  • Padded and vented porous foam back system 
  • Lightweight buckles
  • Essentials compartment with internal Storeganizer™, key holder, pen pockets
  • Velcro sealed phone pouch
  • Insulated hydration compartment
  • Raincover included
  • Carrying handle

SOURCE Hydration Features

  • Widepac™ hydration system
  • Helix™ bite valve - Comfortable valve with safety shut-off mode
  • Co-Ex tube
  • Triple layer taste and odor free film
  • Glass Like™ Film Technology
  • Grunge-Guard™ Technology
  • Taste Free™ System
  • Easy Care & Low Maintenance

SOURCE Hydration Technology

Widepac Closure (U.S Patent No. 7,648,276,B2) - The original user-friendly Widepac™ Slide Closure opens wide, allows easy filling, cleaning, draining, and ice insertion. Airtight seal. Most SOURCE Hydration Systems and Hydration Packs feature reservoirs with our signature Widepac Closure.

Taste-Free™ System - Our co-extruded PE film retains the pure taste with absolutely no plastic flavor, also over time. (BPA and Phthalate free.)

GrungeGuard™ Technology - Our GrungeGuard™-Technology inhibits bacteria growth on the reservoir and drinking tube for the life of the system. Technology utilizes FDA-approved and EPA-registered anti-microbial agent. 

Glass-Like™ Technology - SOURCE's Glass-Like™ Film is 2000% smoother than standard TPU films, with virtually no difference from glass itself. This multi-layer Polyethylene film, manufactured in accordance with SOURCE's Glass-Like™ technology, prevents bio-film build up, making the system virtually self-cleaning.

Easy Care & Low Maintenance - Glass-Like™ technology combined with Grunge-Guard™ technology represents a new generation in hydration systems, in which cleaning is no longer an issue! Simply refill with water and drink again and again without special care. Water will remain fresh for days and even weeks. 


  • Cargo Volume: 12L
  • Hydration Volume: 3L Widepac (shipped with pack)
  • Weight: 0.5 kg / 1.1 lb

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Fuse 12L

Fuse 12L

Our mid-volume Fuse pack keeps you light on the trail, offering 3L/100oz Widepac Water Bladder along with 12L of cargo space divided in three...

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  • Black Black
  • Chili Orange
  • Atlantic Deep Blue
Design Innovation Award

" Bluesign certified maximum sustainability performance. "


" Our tester left water in the Widepac for eight weeks without cleaning and reported no stinky taste or smell."
" More to love: The top opens wide like a paper bag for rapid filling. "

SOURCE Ultimate Review
Source Ultimate Review

" Forget about the plastic taste of your standard hydration system. The Widepac gives you full original taste of your drink from the first sip."

Vital MTB
star star star star star
Source Widepac Hydration System

" Filling up Source bladders is easy thanks to the wide opening."
" The Helix is drip-free, and very easy to drink from. "
" It is one of the easiest to use thanks to its nearly self-maintaining properties, and it is completely taste-free."