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Sea to Summit

Big River Dry Backpack

$211.01 $265.15
20% off
Color: Jet Black
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Description

The Sea to Summit Big River Dry Backpack is a heavy-duty roll-top dry bag with a harness sewn on, so the bag that keeps your gear dry on the water is also the bag you carry up the bank. It is made from 420D ripstop nylon with a white TPU laminate inside, and comes in 30 L, 50 L and 75 L.

What it keeps dry, and how dry

The fabric carries a 10,000 mm hydrostatic head, the seams are double-stitched and fully taped, and the roll-top closes with a non-wicking hypalon strip so water does not creep along the fold. Roll the top down firmly, clip the buckles and your sleeping bag stays dry through spray, rain and a wet hull.

If you snap a buckle, the Field Repair Buckles unscrew with a Phillips screwdriver and a new one goes on in its place.

Capacity and what fits

  • 30 L (22 x 29 x 55 cm, 670 g): a day on the water or a wet-weather commute, with room for spare clothes, lunch and a camera.
  • 50 L (28.5 x 34.5 x 60.4 cm, 760 g): an overnight paddle, with sleeping bag, mat and a change of clothes.
  • 75 L (36.5 x 33 x 67.5 cm, 820 g): multi-day river and touring trips where all your soft gear goes in one bag.

There are no inside pockets. Pack small items in their own stuff sacks and the white interior makes them easy to spot.

Material and durability

420D ripstop nylon is the reason to choose the Big River: it is made to be dragged over a gravel bar on the Snowy or strapped down for a week on the Oodnadatta Track. The oval base is triple-coated where the wear happens, and the laminate is non-PFAS.

Packing and carrying

The EVA foam harness has a sternum strap and a removable 38 mm webbing waist strap that holds the pack steady on a portage. Plan on around 20 kg for a short carry and around 12 kg over a longer distance, and put the heavy items closest to your back.

Lash rails and a grab handle give you tie-down points on a kayak deck or a motorbike rack, and the oval shape sits flat instead of rolling.

Specifications
  • Capacity
    30 L, 50 L or 75 L
  • Dimensions
    30 L: 22 x 29 x 55 cm; 50 L: 28.5 x 34.5 x 60.4 cm; 75 L: 36.5 x 33 x 67.5 cm
  • Material
    420D ripstop nylon with TPU laminate
  • Weight
    30 L: 670 g; 50 L: 760 g; 75 L: 820 g
  • Water Resistance
    10,000 mm hydrostatic head; fully taped seams

Sizing Guide

Additional Information
  • Roll-top closure with Field Repair Buckles you can swap with a Phillips screwdriver
  • 420D ripstop nylon with a 10,000 mm hydrostatic head
  • Double-stitched, fully taped seams
  • EVA foam harness with sternum strap and removable 38 mm webbing waist strap
  • Lash rails and grab handle for tying down on a kayak or motorbike
  • White TPU interior makes gear easy to see
  • Triple-coated oval base that sits flat and stacks
  • Non-PFAS laminate

FAQ's

Is the harness adjustable?
A non-adjustable harness was chosen for durable simplicity on complex days of hauling gear.

How heavy a load can it carry?
The Big River Dry Backpack has a waist strap, not a hipbelt. A short distance carry limit might be 20Kg, a longer distance carry limit would be 12Kg, depending on the wearer. Does it have any inside pockets? It doesn't - but packing smaller items in dry bags/stuff sacks will keep them easy to find inside the pack.

Is the Sea to Summit Big River Dry Backpack waterproof?
Yes. The Big River Dry Backpack uses 420D ripstop nylon with a TPU laminate rated to a 10,000 mm hydrostatic head, double-stitched and fully taped seams, and a non-wicking roll-top closure. Roll the top down firmly before you clip the buckles.

How much weight can the Big River Dry Backpack carry?
Around 20 kg for a short carry and around 12 kg over a longer distance, depending on who is wearing it. The Big River Dry Backpack has a webbing waist strap that steadies the load, so pack the heavy items close to your back.

Which size Big River Dry Backpack should I get?
Choose the 30 L Big River Dry Backpack for day paddles and wet commutes, the 50 L for an overnight trip with a sleeping bag and mat, and the 75 L for multi-day river or touring trips where all your soft gear rides in one bag.

Does the Big River Dry Backpack have inside pockets?
No. The Big River Dry Backpack is one open compartment with a white interior that makes gear easy to see. Pack small items in their own stuff sacks or small dry bags so they are quick to find.

Can you replace a broken buckle on the Big River Dry Backpack?
Yes. The Field Repair Buckles on the Big River Dry Backpack come off and go back on with a Phillips screwdriver, so a snapped buckle is a quick fix at camp and the pack keeps working.

Can the Big River Dry Backpack be lashed to a kayak or motorbike?
Yes. The Big River Dry Backpack has lash rails and a grab handle for tie-down straps, and its oval shape sits flat on a kayak deck or a motorbike rack instead of rolling around.