Sale
  • OverBoard Waterproof Backpack 20 Litres | OB1053BLK
  • | OB1053BLK
  • | OB1053BLK
Sale
Taxes included. Shipping calculated at checkout.

Original Waterproof Backpack - 20 Litres

Original Waterproof Backpack - 20 Litres

£41.24
£54.99 £41.24
Colour: Black

ADD ACCESSORY

Backpack Tidy - Medium 14

Backpack Tidy M or L - Buy together with this product.

Select
Soft Water Bottle – 450 ML

Soft Water Bottle 450ml - Buy together with this product.

Select

IP66 - Quick Submersion

5 Year Extended Warranty

Key Features Comparison

Eco-Friendly Packaging
  • 100% waterproof protection: Keeps contents dry outside and icy cold inside—built for adventures on water, beach days, or camping.
  • Best in class: Tough, BPA-free fabric and HF welded seams ensure leakproof, food-safe performance built for rugged outdoor use.
  • Feature packed: Thermal insulated core, purge valve, waterproof zip pocket, comfy backpack straps, airflow back panel, and soft design for easy packing.
  • Keep drinks cold for 24+ hours: Thermal insulated core and roll-top seal - ideal for outdoor adventures or just chilling.
See specs & sizing
VIEW FULL PRODUCT DETAILS

Original Waterproof Backpack - 20 Litres

Colour: Black
£41.24
£54.99 £41.24

KEY FEATURES

  • THERMAL INSULATED FOAM CORE

    THERMAL INSULATED FOAM CORE

    Dual-layered PVC insulating core helps retain solid ice for 24+ hours.

  • SAFE & BPA FREE

    SAFE & BPA FREE

    The internal lining is fully tested and certified Bisphenol A (BPA) free, meaning it's food and drink friendly.

  • AIR PURGE VALVE

    AIR PURGE VALVE

    For flat pack storage after use & to aid insulation when loaded.

  • AIR-FLOW SYSTEM

    AIR-FLOW SYSTEM

    Padded, breathable and water resistant lumbar support and backpack straps.

  • STERNUM STRAP

    STERNUM STRAP

    Fully adjustable strap both horizontally & vertically with a whistle buckle.

  • 100% WATERPROOF

    100% WATERPROOF

    Simple to use roll-top sealing system – IP66.

  • ANTI-ROLL FLAT BASE DESIGN

    ANTI-ROLL FLAT BASE DESIGN

    Ideal for storing on your board or boat deck thanks to the shape of the base.

  • QUICK RELEASE BUNGEE & D-RINGS

    QUICK RELEASE BUNGEE & D-RINGS

    Elasticated system to securely store items you want quickly to hand.

Tech spec

Top or Side Waterproof Fold Seal System™ (IP66)
HF welded seams
PVC bonded nylon sides and base
Tough 600D PVC tarpaulin
Multiple D-rings
Large mesh pocket
Elasticated webbing
Reflective patch
Internal zip pocket – H:25cm × W:21cm
Top carry handle
Comfortable back panel with air-flow design
Padded straps with reflective patches
Adjustable chest and waist straps

Select a dot on the image to see the technical features

Product details

DESCRIPTION

The OverBoard 20 Litre Original Waterproof Backpack features unique seamless construction and a 3-way roll-top sealing system (top, side & messenger), making it 100% waterproof and perfect for quick submersion on the water.

Packed with practical features, including a large internal zip pocket for easy access to keys, elasticated front webbing, and more.

 

Not sure which 100% Waterproof Backpack to choose? View our Key Features Comparison Guide.

Want to protect your laptop or tablet inside? Check out our Backpack Tidy.

#Keep it dry!

SEALING

 

1ROLL NECK TIGHTLY

Roll neck tightly towards the front of the waterproof backpack 3 times.

Roll Neck Tightly

2ATOP SEAL

Bring ends together and buckle to securely fasten and create a waterproof seal suitable for quick submersion (IP66).

Top Seal

2BSIDE SEAL

Connect the buckles at each side and pull compression straps to securely fasten and create a waterproof seal suitable for quick submersion (IP66).

Messenger Seal

2CMESSENGER SEAL

Bring the top strap towards the front of the backpack and secure to the Velcro patch to create a foul weather and spray proof seal (IP65).

Messenger Seal
FEATURES
  • 100% waterproof backpack - Class 3: IP66
  • Floats safely if dropped in water
  • Protects contents from dust, sand, dirt and water
  • High Frequency welded construction
  • 3 way roll top sealing system (top, side & messenger)
  • Internal zip accessories pocket - H: 25cm x W: 21cm
  • Padded shoulder straps with reflective patches
  • Comfortable back panel with air-flow design
  • Adjustable waist and sternum straps
  • Large elasticated mesh side pocket
  • Elasticated front webbing
  • Reflective front patch
  • Top carry handle

 

View our Backpack Key Features Comparison Guide 

 

SIZING

SEALED DIMENSIONS

HEIGHT
44cm / 17.3"
WIDTH
24cm / 9.4"
DEPTH
19cm / 7.4"
CAPACITY
1200 cubic inches
WEIGHT
1.1kg
Fully sealed dimensions using the roll-top method.
Original Waterproof Backpack Size Guide
DELIVERY

Orders placed before 3pm, Monday to Friday, are dispatched the same day and typically arrive within 2 business days, even with Standard Delivery.

Orders placed after 3pm on Fridays, or on weekends and public holidays, will be dispatched on the next working day.

Delivery options:

  • Standard Delivery (2 to 5 business days): £3.95 – sent with Royal Mail
  • Express Delivery (1 to 2 business days): £8.95 – sent with DPD Couriers (no weekend deliveries)

💡 Enjoy Free Standard Delivery on all orders over £100, and upgrade to Express Delivery for just £5.

FREE RETURNS

We want you to shop with confidence — that’s why all UK orders now come with FREE returns via InPost.

 

If something’s not quite right, simply email us at support@overboard.com to start your return, then drop your parcel at a nearby InPost locker — no labels, no queues, and no cost.

 

You’ll have 30 days to return or exchange your item, as long as it’s unused and in its original packaging.

 

Learn more about our Returns Policy.

"Quick delivery well priced and a quality standard product. Rugged and safe."
"Super quick delivery and dispatch (even on standard) great products, robust and feature packed."
"Great price, quick dispatch, loads of notifications and quick delivery, will definitely use again."
"Really kind and helpful service when I asked for help."
4.9/5
3,500+ Reviews

OVERBOARD RECOMMENDS