The Big Papa and Harness allows you to carry large, bulky items on your bike without a rack, using a simple harness system that makes daily packing a cinch. Yep, honestly – just a quick cinch!

  • 3 different seat pack size options for flexibility
  • Durable materials and a reinforced construction
  • Highly water resistant for all-weather riding

Your sleeping bag, bivvy bag, tarp, 3-piece suite…. Ok, maybe not the 3-piece suite. With a maximum capacity of 17 litres, the Big Papa is designed for long bikepacking trips and round-the-world expeditions with three different seat pack sizes to provide a wealth of under-saddle carrying options.

Having a separate harness that stays on your bike gets rid of the daily faff of wrestling heavy seat packs and fiddling with straps – the bane of bikepackers everywhere! The rigid Harness system connects securely to your seat post and saddle with heavy-duty Velcro and webbing straps. Once in set up, the Big Papa bags slot neatly inside, allowing you to pack up and get out riding quicker. For extra stability and reduced sway on rough terrain, the Big Papa Harness is also compatible with our Exo-Rail seat pack mount.

The Big Papa and Harness are designed to last, ride after ride, through even the most jaw-clattering of terrains. The Harness is made from super abrasion resistant 1100D Cordura®with Hypalon patches across the spine to protect this high wear area. All stress points are reinforced with bar tack stitching and the Seat Packs themselves are made from lightweight and tear-resistant VX21 fabric.

With fully waterproof outer materials and a roll-top closure closure (3 turns should do it), the Big Papa is highly water-resistant, protecting your kit in bad weather. The stitching isn’t seam taped though so we’d always recommend wrapping any electronics or down items in a dry bag – especially if you expect to be fording any rivers!

Handmade and designed in Nottinghamshire by our talented factory team, the Big Papa and Harness come with a 25-year Alpine Bond.



Key Features

  • Harness system for quick and simple packing and unpacking
  • System is compatible with 3 different sizes of seat pack for flexibility
  • Abrasion and tear resistant materials with a reinforced construction for durability
  • Highly water-resistant with waterproof fabrics and a roll-top closure
  • Exo-Rail compatible for extra load carrying stability
  • Provides a large amount of under saddle storage without racks
  • Roll-top bags can be cinched down to reduce empty space
  • 25 Year Alpine Bond

Vital stats


Harness: 1100D Cordura® nylon, Hypalon
Seat Pack: VX21 210D nylon laminate


Harness: 40x18x14 Capacity: 17L size options


Min clearance: 22cm

Origin: United Kingdom

Care & Environmental Advice

Product Care Information

The Big Papa and Harness have a DWR coating which helps them to repel water and dirt. After your ride, wipe down your seat pack and harness with a damp cloth to remove dirt or use mild soap on more stubborn muck. Leave to air dry.


The Details

Big Papa And Harness Bundle in action