• a sturdy large waterproof dry bag backpack 30 litres in black front view studio shot
  • a smart looking sturdy waterproof dry bag backpack 30 litres in black back view studio shot
  • the smart black 30 litre salty kit backpack with detachable comfort straps styled by man on a Cornish beach
  • inside view of the large 30 litre dry bag backpack with large inside pocket studio shot
  • showing roll top closure best for water sports with the large black dry bag by salty kit
  • rectangle shape large dry bag by salty kit side view showing front pocket
  • showing all the USP's of the smart and functional salty kit 30 litre backpack
  • paddleboard bag nice and large with 30 litre capacity black and a backpack being styled by a lady on a Cornish Beach
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Salty Kit

Black 30L Waterproof Dry Bag Backpack

Black 30L Waterproof Dry Bag Backpack

IPX6 Waterproof Rated - floats, protects against water splashes, heavy rain, dirt & sand

£69.00 GBP
£69.00 GBP
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Shipping calculated at checkout.

Black 30L Waterproof Dry Bag Backpack – Gear Up, Stay Dry

Big gear, bold days—this Black 30L Dry Bag Backpack is built to handle it all. Designed for durability and adventure, it’s made from heavy-duty 500D PVC tarpaulin with a roll-top waterproof closure to keep your kit bone dry no matter where you roam. Whether you’re paddleboarding, sailing, kayaking or hitting the beach, this bag delivers splash-proof confidence and serious functionality.

Inside, a mesh zip pocket keeps your essentials secure, while detachable shoulder, chest, and waist straps give you flexible carry options. Unclip and stow your straps inside the bag to keep them dry while you're out on your SUP or kayak. With reinforced D-rings, tough clasps, and a rubber front handle, this waterproof backpack is ready for wild weather and everyday adventure alike.

Ideal for wetsuits, towels, gym gear, or bulky bits you need to haul, the spacious 30L capacity handles it all. Want to use it as a beach bag, travel backpack, sailing companion or gym dry bag? Go for it—this isn’t your average dry bag.

💡 Key Features:

  • 100% Waterproof – made from strong 500D PVC
  • IPX6 Rated – resists dust and powerful water jets
  • Roll-top closure – side clasp for everyday, top clasp for full waterproofing
  • Floats in water when sealed (roll at least 3 times tightly)
  • Detachable backpack, chest & waist straps for custom fit and dry storage
  • Reinforced welded seams for maximum protection
  • Front pocket with D-rings and adjustable tape—perfect for bottles
  • Easy to clean – warm water or lemon juice for stains
  • Store smart – keep cool, dry, and out of direct sunlight

📏 Dimensions:

  • Packed: H55cm x W30cm x D20cm
  • Weight: 1300g
  • Capacity: 30 Litres

Read the fab review of this bag from Paddler Magazine, click here 

View full details

Choose the right size - our useful guide

WHAT FITS IN OUR 5 LITRE BAG

5 Litre Dry Bag – The Mini Adventurer

Perfect for light travel, quick dips, or keeping essentials dry on the go.

Fits:

  • Phone, keys, wallet
  • Small towel or sarong
  • Snacks or a reusable water bottle
  • Sunglasses and sunscreen
  • Lightweight top or swimwear

Best for: SUP sessions, dog walks, festivals, or stashing valuables inside a larger kit.

🔗 See the 5L bag in action

WHAT FITS IN OUR 20 LITRE BAG

20 Litre Dry Bag – The Day Tripper

Your go-to for full-day adventures with room for comfort and backup layers.

Fits:

  • Full-size towel
  • Change of clothes (tee, leggings, hoodie)
  • Lunchbox and flask
  • Compact camera or GoPro
  • Drift Wrap or lightweight robe
  • First aid kit and dry pouch

Best for: Beach days, kayaking, hiking, or packing for unpredictable Cornish weather.

🔗 Explore the 20L bag setup

WHAT FITS IN OUR 30 LITRE BAG

30 Litre Dry Bag – The Weekend Warrior

Built for serious gear hauls and multi-day missions.

Fits:

  • Two full outfits + shoes
  • Large towel or blanket
  • Bulky Changing Robe or Wetsuit
  • Toiletries and tech pouch
  • DSLR camera or drone
  • Snacks, books, and extras
  • Bottle holder

Best for: Camping, surf trips, or when you need one bag to rule them all.

🔗 Peek inside the 30L bag

Delivery & Returns


20 litre dry bags by salty kit in watermelon and olive great for adventuresWe offer free standard shipping within the UK, Channel Islands and Isle of Man by Royal Mail or Evri from our HQ in Cornwall.

We now offer delivery via DPD to Australia & New Zealand.

We aim to get your order processed and dispatched within one to two business days. 

EU & International Duties and taxes: Salty Kit is not responsible for any added customs taxes or duties that may incur upon delivery of your item. Custom duties and tax is not included within the cost of your order and is to be paid by the customer. 

Does not apply to Wholesale orders.

For our Returns & Refunds Policy click here

How to video - a guide to using your Salty Kit Bag

Customer Reviews

Based on 2 reviews
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Upamanyu Mukherjee
Icon level kit

Delighted with my Salty Kit 30L backpack. Roomy enough for my work and gym stuff to fit in one compartment. It has kept everything dry as bones throughout a wet British winter.

That's so great hear, thanks so much :)

P
Peter Winans
Brilliant bag

We took it on a trip to the USA and got many complements on the bag and people asking where we got it from. We have passed on your details and hopefully you may get some orders from the USA!

That's great, thanks so much! :)