How many beers will the 20L hold in it? Also is the strap strong enough to hold this full of beers?

The 20L is about 15 inches. If you did a nice circular stack with the cans you might be able to fit a little more than a 12 pack. Or do a circular stack and fill the middle with ice to keep them cold.😉

What are the dimensions on the 40L?

40L size is Height 16.9 x Bottom Diameter 11.9 inches after top is rolled 4 times.

How many pounds of kibble fits into 20L in these travel dog food bags?

Depending on the dog food brand, a bit less than a 10 pound bag.

Family of 5 going on cruise, spending day on beach. What size would be best to carry everyones things? Do i need to 2?

The biggest is the 40L, I carried a cozy thick coleman sleeping bag (that is all). I think my answer will be: "It depends" in how you define things for 5 people. I hope the fact that that same size bag carried a sleeping bag will help you with an idea of how thick it is. Do a Youtube search by writing "Marchway dry bag" and lots of info may pull to help you deeper. Have a good time.

Marchway Floating Waterproof Dry Bag Backpack 5l 10l 20l 30l

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¥10464

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Stay Dry, Stay Ahead — Gear Up Like a Pro!

FLOAT FIND - Designed to float when sealed, so your bag stays visible and easy to retrieve on water.
WATERTIGHT CONFIDENCE - Roll-top closure seals out water completely, protecting your gear from rapids, rain, and sand.
ALL WEATHER VERSATILITY - Perfect for kayaking, hiking, beach days, or rainy commutes—your gear stays dry no matter the challenge.
BUILT TO BRAVE THE ELEMENTS - Reinforced multi-layer PVC with welded seams resists tears and abrasions for rugged outdoor use.
CUSTOM FIT FOR EVERY ADVENTURE - Available in 5L to 40L sizes with versatile carry options—crossbody or backpack style for ultimate comfort.

The MARCHWAY Floating Waterproof Dry Bag Backpack combines durable multi-layer PVC construction with a secure roll-top seal to keep your belongings completely dry. Available in multiple sizes from 5L to 40L, it features adjustable backpack and shoulder straps for ergonomic carrying. Engineered to float and withstand harsh outdoor conditions, this dry bag is ideal for kayaking, camping, beach trips, and any adventure where water protection is essential.

Specifications

ASIN	B071H948C7
Best Sellers Rank	513,301 in Fashion ( See Top 100 in Fashion ) 881 in Travel Accessories
Brand	MARCHWAY
Brand Name	MARCHWAY
Capacity	20 litres
Closure Type	Buckle
Closure type	Buckle
Colour	Deep Orange
Country Of Origin	China
Customer Reviews	4.7 out of 5 stars 31,246 Reviews
Handle Type	Shoulder strap and backpack strap
Item Type Name	Marine Dry Bags
Item Weight	0.14 Pounds
Manufacturer	MARCHWAY
Manufacturer Part Number	WDB20LDPOR
Material	Polyvinyl Chloride (PVC)
Material Type	Polyvinyl Chloride (PVC)
Model Number	WDB20LDPOR
Number of Compartments	1
Pattern	Solid
Pocket Description	Utility Pocket
Shell Type	Hard
Size	20L
Strap Type	Shoulder
Style	Backpack
Style Name	Backpack
Unit Count	1 count
Wheel Type	Double spinner

Reviews

A**R

Beach

Great item for holidays

7.02.2026

A**K

light weight

great size light weight fast delivery waterproof

14.12.2024

F**2

Great bags.

100% waterproof. Great all purpose bag. The larger size has now replaced all my rucksacks. Love the marchway dry bags.

31.03.2024

L**H

Good product

Great product, would buy again

11.01.2026

P**P

Neat bag

Waterproof which is perfect for using whilst on my motorbike in the rain. Spacious enough for my needs (bits of shopping etc). Feels comfortable on my back. This 20l bag comes with two back straps. Smaller backs come with one

10.03.2019

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¥10464

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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MARCHWAY Floating Waterproof Dry Bag Backpack 5L/10L/20L/30L/40L, Roll Top Sack Keeps Gear Dry for Kayaking, Rafting, Boating, Swimming, Camping, Hiking, Beach, Fishing

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