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.

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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

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

Product ID: 46040556

🎒adjustable backpack straps for comfort

💧100% waterproof roll-top seal

🛶floats to keep gear visible & safe

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Description

💦 Stay Dry, Float High, Adventure Far!

FLOAT FIND - Designed to float when sealed, so your gear stays visible and easy to retrieve—never lose your stuff again.
VERSATILITY MEETS STYLE - From kayaking to hiking, beach days to fishing, choose from vibrant or classic colors to match your active lifestyle.
BUILT TO BRAVE THE ELEMENTS - Reinforced multi-layer tarpaulin resists tears, abrasions, and rock scrapes—durability that outlasts your wildest trips.
TAILORED FOR EVERY ADVENTURE - Available in 5L to 40L sizes with removable straps and ergonomic backpack design for perfect load distribution.
UNMATCHED WATERPROOF PROTECTION - Roll-top closure with welded seams locks out water, keeping your essentials bone dry in rapids or rain.

The MARCHWAY Floating Waterproof Dry Bag Backpack combines rugged multi-layer PVC construction with a secure roll-top seal to keep your gear completely dry. Available in multiple sizes (5L-40L) with adjustable straps, it floats for easy retrieval and withstands harsh outdoor conditions, making it the ultimate companion for kayaking, camping, and all water-based adventures.

Specifications

ASIN	B01LXBOVD1
Best Sellers Rank	#418 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #4 in Marine Dry Bags
Brand Name	MARCHWAY
Capacity	20 liters
Closure Type	Buckle
Color	Black
Customer Reviews	4.7 4.7 out of 5 stars (34,054)
Handle Type	Web Handle
Item Dimensions L x W x H	9.5"L x 9.5"W x 14.6"H
Item Type Name	Marine Dry Bags
Item Weight	15.2 ounces
Manufacturer	MARCHWAY
Manufacturer Part Number	WDB20LBLA
Material Type	Polyvinyl Chloride (PVC)
Model Number	WDB20LBLA
Number of Compartments	1
Pattern	Solid
Size	20L
Strap Type	Adjustable,Cross-body,Removable,Shoulder Strap
Style Name	Backpack
Unit Count	1 Count

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34416CFA

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In stock

Sold byAmazon SenegalDelivered 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 Senegal.

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