product image Thunder 50 black
product image Thunder 50 black back

Thunder 50

Lightweight and comfortable backpacking pack with front access

  • robust and versatile despite low weight
  • lightweight and adjustable comfort suspension system
  • three access options to the main compartment
Thunder 50 black
Prod. no. 7640445451215
Backsystem Thunder Backpack

Sophisticated suspension system with easy length adjustment and minimal back contact points for good venting

Bottom Loops Backpacks

4 base loops can be used to attach sleeping mats, tent, etc.

Open Thunder Backpack

Large front panel access to the main compartment: dual vertical YKK zippers open the front flap for loading and unpacking and allow easy access to the interior.

Thunder Hydration System

Hydration system compatible

Comparison Female Male Backpack Thunder

Women's version: female-specific hipbelt and shoulder straps, aluminium bar is 5 cm shorter 

Mesh Pockets Backpack

Durable mesh stretch pockets on front, sides and hipbelt

Front Fixation Mat

Side compression straps double function as a front compression system as well. Comes handy when a wet tent fly or a sleeping pad needs to be strapped to the front of the pack.

Product description

Thunder 50 is a versatile trekking backpack with excellent load transfer. In relation to the volume and features, it is super light and perfect for multi-day touring or trekking.

The three access options to the main compartment make it extremely versatile in packing and handling. Both laterally and through the top and front loader openings, gear is always quickly at hand. A large stretch outer pocket on the front and two side pockets provide additional storage space. The height-adjustable lid allows the main compartment to be adjusted as needed. Further attachment options are created by the functional compression straps on the sides, which can also be deployed on the front of the pack.

The sophisticated comfort carrying system with minimal contact points and aluminum stays is height adjustable can be easily adapted to your back length and guarantees a perfect fit with high freedom of movement. A padded hip belt provides additional carrying comfort. The durable, water-repellent recycled and PFC-free fabric protects contents from the elements.

icon pfc free



50 l


16 - 23 in

Color Inside

black: grey melange
navy: grey melange


29.5 x 13 x 9.8 in

Hipbelt size

34 - 57 in


55.4 oz

Load limit

52.9 lb



recycled 210 D robic HD ripstop nylon carbonate
PU coated
1500 mm water column
Oeko-Tex® 100 certified
PFC free

Pack suspension

6061-T6 aluminum stay


Recycled materials

More and more EXPED products are made from recycled materials. Materials gained from previously made materials -such as PET-bottles or waste from the production of textiles.

Oeko-tex certified material

Oeko-Tex® is a testing and Certification system for raw materials and finished products. EXPED does not feature fully tested products. The listed products aren't certified under this standard. Only accordingly specified materials are certified.


Abbreviation for Per- or poly fluorinated chemicals, also known as fluorcarbons. Non degradable and accumulating toxic chemicals used for waterproofing.

Made in Vietnam: Vision Bag

The Korean-owned company Vision Products Corporation has been producing backpacks and bags since 1984.


Warranty years

5 Years