Both zippered and roll top waterproof bags have their pros and cons, here's a breakdown of the two bags:
Roll-Top Waterproof Bags
Roll Top Bag Pros:
- Dependable Waterproofing: The roll-top closure creates a simple, reliable seal.
- Durability: No zipper mean less chance of failure.
- Expandability: Depending on the bag design, you may be able to adjust the capacity of the bag by how many times you roll the top.
- No Maintenance: Bags with waterproof zippers require maintenance for longevity and ease of use, whereas roll top bags do not.
- Cost: Generally speaking, roll top waterproof bags cost less.
Roll Top Bag Cons:
- Access: Getting to specific items inside can be a hassle since you have to unroll the entire top.
- Submersion: Roll top bags are typically more prone to leaking when submerged.
- Organization: Limited access through a single opening means digging through belongings or emptying the contents to find what you need.
- Bulkier: The rolled closure takes up extra space compared to a zipped top.
- Vertical Orientation: Typically most waterproof roll top bags have a vertical design limitation due to the nature of the closure. A horizontal bag is harder to roll and keep rolled.
Zippered Waterproof Bags
Waterproof Zipper Bag Pros:
- Easier Access: Zippers allow you to quickly reach specific items inside the bag.
- More Organized: Zippered compartments and pockets help keep things tidy and allow better visibility and organization of contents.
- Sleeker Design: Can be more compact due to the lack of rolled closure material.
- Quicker Operation: Unzipping takes less time for opening and closing compared to a roll top bag.
- Introduce Flotation: Zippered bags allow you to introduce air into a waterproof bag to provide bouyancy or flotation to a bag.
Waterproof Zipper Bag Cons:
- Cost: High quality waterproof zippers are expensive and drive up the cost of a quality bag.
- Reliability or Failure: Zippers may jam or break, causing problems in the field.
- Maintenance: Full waterproof zippers require cleaning and lubrication for easier opening and longer life.
What both waterproof bags are good at:
- Waterproof: Modern waterproof zippers provide high levels of submersible protection roll top bags when properly closed provide good waterproof protection but less against submersion.
- Protection: Keeping contents protected from rain, snow, dust, moisture and even scent.
- Clean Up: Most waterproof bags are made of either TPU or PVC material and can easily be hosed off or washed out.
Most often choosing a submersible waterproof bag comes down to personal preference. I typically ask people what's more important - reliability or ease of organization? Choose a roll-top bag for simpler waterproofing and durability, especially for activities where dependability is the most critical factor. If failure is not an option, a roll top waterproof bag is probably best. If quick, repeated access and ease of organization are priorities, a zippered waterproof bag is most likely a better option.