Seal Line Blocker Dry Sack


RRP: £24.00
NOW: £20.83 (£17.36 ex VAT)

You Save 13% Availability:  No stock

Orange - 30L


Thanks for your interest in the Seal Line Blocker Dry Sack - 30L - Orange. We're sorry we're unable to fulfil an order at this time but if you'd like to be notified when stock is next available please let us know:


Quantity *:

Email *:


Notify Me

In the meantime, perhaps the alternatives below might be suitable:



Associated Items


Discount Code

If you are a member of an outdoor or watersports group and have a discount code, please enter it in the box below.

For more information on discount codes, click here.

Seal Line Blocker Dry Sack

Great for organizing and protecting gear from the wet weather inside your backpack. Inclusive of a roll- top closure, with sewn and taped construction to ensure no water leakage. Extremely water-tight.

Perfect for back packing, hiking, trekking.

One of Up and Unders lightest, most efficient-packing dry sack, the ultralight BlockerLite boasts a rectangular shape and strong fully welded seam construction to deliver waterproof protection.

Seal Line have discovered that it is:

  • Space-saving: Patent-pending rectangular shape packs 20% more efficiently than rounded dry sack shapes, saving space in your pack.
  • Efficient-packing: PackTight packing system takes advantage of the flat-sided, rectangular shapes of the Blocker dry sacks, closely nestling them together for easy, space-saving and intuitive organization.
  • Waterproof strength: 50% stronger than sewn and taped seams, all seams are welded to deliver superior strength, durability, and waterproof protection over time.
  • Tough: High-strength 70-denier polyurethane-coated nylon is light enough to satisfy ounce-counters, yet durable enough to stand up to life outside a pack.
  • Eco-friendlier: PVC-free materials offer a reduced environmental impact over vinyl materials.
  • Secure: Roll-top closure features a grippy stiffening strip to ensure a wrinkle-free, secure seal when closing the dry sack.
  • Easy organization: Available in 4 colors and 5 sizes, making it easy to organize by both dry sack color and size.

  • Materials:
  • 70D Polyurethane-coated nylon
  • PVC Free
  • Made in China
  • 30 LTR
  • Weight 3.7oz
  • Width 6.3 in
  • Length 12 in
  • Hight 23 in


Trip Report - Ice Climbing in Rjukan

Team Up and Under member Ed Jenkins spent a week in Norway at the end of January, on his first adventure with Norwegian Ice. Read about his trip here.
More on Trip Report - Ice Climbing in Rjukan »

Freya Hoffmeister: How to be a Doer

World-renowned ocean kayaker, Freya Hoffmeister, is coming to Up and Under on the 13th February to give a talk on her adventures circumnavigating South America. We asked Freya what drives her to take on such daring challenges and how we can be inspired to do the same...
More on Freya Hoffmeister: How to be a Doer »

Never Too Old To Learn

You never will know everything in the mountains, and the knowledge we have must be practised or will be forgotten. #teamupandunder member Mark Aston helps lead a navigation exercise with the local trail running club, and tells how, even when leading, you can always learn something.
More on Never Too Old To Learn »

Please wait!