Big Papa is a 17 litre saddle bag providing rack-free storage for bulky items on long bikepacking trips.

The separate rigid harness system speeds up packing and removal so you can get riding quicker. Adjustable saddle and seat post attachments ensure a secure fit to your bike.

The harness is compatible with the Exo-Rail mount for extra stability and reduced sway on rough terrain. Hardwearing waterproof fabric and a roll top closure protects your kit from all but the heaviest rain. Built to last by hand in the UK with a 25 year Alpine Bond.


Weatherproof construction

Waterproof X-Pac® X11 and Cordura® fabrics for all-weather riding

Separate harness and bag

Speeds up packing and removal of the bag at either end of your ride.

Exo-Rail compatible

For maximum stability and reduced sway over rough terrain

Built to last in the UK

Reinforced construction with abrasion and tear resistant fabrics, backed up by our 25 year Alpine Bond

Product overview

  • Rack-free carrying solution for bulky items
  • Separate bag and harness allows quick packing and removal at either end of your ride
  • Waterproof X11 and Cordura® fabrics (not seam-taped)
  • Roll-top closure and harness compression straps allow partial fill without excess internal space
  • Secure webbing attachments to saddle rail and seat post
  • Compatible with the Exo-Rail for reduced sway and extra stability for heavier loads
  • Handmade in our UK Factory
  • 25 year Alpine Bond

Technical details


X-Pac® X11 3-layer laminate (100% organic cotton duck / recycled polyester X-PLY / polyester film backer), 1100D Cordura® nylon, Hypalon, Nylon webbing and strapping


Height: 50cm Width: 18cm Depth: 18cm
Minimum clearance: 22cm


Bag: 223g
Harness: 275g


United Kingdom

Sustainability & Care

Environmental impact

Organic cotton

X-Pac® X11 fabric uses a hard-wearing 100% organic cotton face fabric. Organic cotton farming produces significantly less CO₂, uses less water and eliminates the use of harmful pesticides.

Climate neutral fabric

X-Pac® X11 fabric is certified by cleenTEC® as being 100% climate neutral. X11 is made from a mixture of plant-based and recycled materials and manufactured in factories using only green energy.

Care Advice

The Big Papa has a DWR coating which helps it to repel water and dirt. After your ride, wipe down your bag with a damp cloth to remove dirt or use mild soap on more stubborn muck. Leave to air dry.


Big Papa in action