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Reduced price! Sea To Summit Ultra-Sil Pack Liner (Large) View larger

Sea To Summit Ultra-Sil Pack Liner (70-90L)


New product

Ideal for large packs (e.g. military bergens or large touring packs) when you need to keep your kit dry and your pack-weight down.

Capacity: Stated 90L (generally with pack liners the max capacity is 10 to 20L above what is ideal - we think these are perfect for a 70L internal pack capacity).

More details

1 Item


Warning: Last items in stock!

£ 22.75


RRP: £ 35.00

Data sheet

Brand / Manufacturer Sea To Summit
Equipment Category Carry (Packs, Bags, Pouches)
Purpose Multi Purpose
Materials Seam-Sealed Siliconised Cordura, Hypalon Roll-Top Closure
Properties Ultralight, Waterproof
Dimensions Oval Base x Height: (55 x 25) x 122cm
Package Weight (approx.) 180 g / 6.35 oz
Item Weight 126 g / 4.44 oz

More info

Sea To Summit Ultra-Sil Pack Liner (Large)

This large-sized pack liner with its 90 litre max capacity is ideal* for 70L large backpacking rucksacks and military bergens.

The Ultra-Sil Pack Liner won the prestigious Backpacker Editors' Choice award in 2006. It's made of 30D Ultra-Sil™ CORDURA® fabric, making it super lightweight and is an oval shape to fit inside packs easier. The extra wide opening roll-top closure folds in three before being rolled and sealed with the low profile buckles.

Sea To Summit's Ultra-Sil liner will weatherproof all the gear inside your pack and is ideal for any adventurous multi-day / multi-week outdoor expeditions.

* Generally with pack liners the max capacity is 10 to 20L above what is ideal - we think these are perfect for a 70L internal pack capacity.


  • Ultra-Sil Pack Liner opens wide for easy packing when it's inside a pack
  • Unique top closure: extra fabric at the top folds in and velcros in place, then rolls down, creating a more compact closed loop at the top
  • Made of PU coated Siliconized Cordura®
  • Non-wicking Hypalon roll-top closure with stiffener at the top for a better seal
  • Fully seam sealed
  • Uses low profile buckles
  • Slippery finish for easy packing
  • Colour: Red
  • Dimensions - (Oval Base) x Height: (55 x 25) x 122cm
  • Capacity: 70L - 90L
  • Weight: 126g


  • When packing your pack, make sure that sharp / very hot objects do not come into contact with the Ultra-Sil fabric.
  • When you return from a trip, make sure your Ultra-Sil Pack Liner is completely dry and aired out before being packed for storage.
  • Siliconized on the outside, tough Cordura® nylon is weatherproof, lightweight and durable for hiking and backpacking in wet conditions.
  • Polyurethane coating on the inside offers the ultimate in waterproofness; waterproof seams are double-stitched and factory-taped for added weather protection.
  • Hypalon® watertight roll-top closure keeps contents secure and protected; fold the Hypalon strip down first and make at least three rolls before closing the buckle.
  • Roll-top fabric sacks are not intended for complete submersion; sensitive electronic devices should be double-bagged or packed in a waterproof hard case for maximum protection.