Wosport WST Flat Pack Backpack — Multicam

The WST Flat Pack is a compact tactical backpack with a variable profile, designed for operators who already run a structured loadout on a plate carrier or assault vest and need extra carrying capacity without giving up mobility. The expandable wedge system allows the pack to go from an almost flat profile up to 9.6 litres of usable volume, adjusting to whatever the day's load requires.

The expansion mechanism is the core concept of this design: the pack can ride compressed and nearly flush against the operator's back, or open fully to take a support kit, a change of clothes, or mission-specific gear. The main compartment is set up for a 1-litre hydration bladder, with a routed port for the drinking tube. The smaller front admin pocket lets you organise batteries, chem lights, or other immediately needed items without opening the main compartment — a straightforward separation that makes a real difference when time is short.

The external PALS/MOLLE attachment system on the rear panel lets you mount the pack directly onto a plate carrier, chest rig, or assault vest using the external straps, keeping the whole system integrated without improvised fixes or dangling tails. The chest strap stabilises the load even when the pack is fully expanded. It is worth noting that the expanded 9.6-litre profile — useful on patrol or at a forward operating base — does reduce discretion and adds some depth to your back profile: anyone working in confined spaces will prefer to keep it compressed and access only what is strictly needed.

Key features

• Expandable volume from an almost flat profile up to 9.6 litres: adapts to the load without adding unnecessary bulk when running light.
• PALS/MOLLE compatibility on the rear panel: mounts directly to a plate carrier, chest rig, or assault vest with no adapters required.
• Hydration-ready for a 1-litre bladder, with a tube port routed through the main compartment.
• Separate admin pocket for quick-access items, without needing to open the main compartment.
• Chest strap included to stabilise the load at full volume or on uneven terrain.
• Multicam colourway for direct integration with camouflage systems already in use.

In the box

• WST Flat Pack backpack in Multicam
• Chest strap