Therm-a-Rest® - Sleeping Pads, Bags & Outdoor Comfort

How to Use a Waterproof Case for Your Electronics on a Kayak Trip

How to Use a Waterproof Case for Your Electronics on a Kayak Trip

By Therm-a-Rest® - Sleeping Pads, Bags & Outdoor Comfort | Published: 2026-08-18

Category: How-to Guides

Learn how to protect your phone, camera, and other electronics on a kayak trip with a waterproof case. Tips on choosing, sealing, and using a dry bag or case effectively.

Paddling across a calm lake or navigating ocean waves, your phone, camera, and GPS are essential for navigation, capturing memories, and staying safe. But water and electronics are a dangerous mix. A single splash or unexpected capsize can ruin your gear in seconds. That's why a reliable waterproof case or dry bag is a must-have for any kayak trip.

In this guide, we'll walk you through how to use a waterproof case effectively, from choosing the right one to sealing it properly and accessing your devices on the water. We'll also highlight some versatile options like the MSR Bigfork Dry Daypack and the Changing Poncho, which offer extra protection for you and your gear.

Changing Poncho
Changing Poncho

Choosing the Right Waterproof Case or Dry Bag

Before you hit the water, you need to select the right protection for your electronics. Consider the size of your device, the type of paddling you'll do, and how often you need to access your gear. For a phone or small camera, a dedicated waterproof case with a clear touchscreen window is ideal. For larger items like tablets or extra batteries, a roll-top dry bag is more practical.

When choosing a waterproof case, look for an IPX8 rating, which means it can be submerged beyond 1 meter. Also, check the closure mechanism—roll-top dry bags and cases with multiple seals offer better protection than simple zippers. For kayaking, a case that floats is a bonus if you accidentally drop it overboard.

  • Check the IP rating: IPX8 is best for submersion.
  • Opt for a roll-top closure for a watertight seal.
  • Choose a case with a clear window for touchscreen use.
  • Consider a floating case for extra safety.

How to Properly Seal a Waterproof Case

Even the best waterproof case won't protect your electronics if it's not sealed correctly. Start by cleaning the sealing surfaces—any sand or debris can compromise the seal. For roll-top closures, fold the top at least three times before clipping it shut. For zippered cases, ensure the zipper is fully closed and the protective flap is secured.

Before you head out, do a simple test: place a tissue inside the case, seal it, and submerge it in water for a few minutes. If the tissue stays dry, your case is ready. This quick check can save your gear from a watery grave.

Also, consider using a dry bag as an extra layer of protection. For example, the MSR Bigfork Dry Daypack is a roll-top dry bag that can hold your electronics and other essentials, keeping them dry even if you take a swim.

  • Clean the seal area before closing.
  • Roll the top at least three times for a secure closure.
  • Test your case with a tissue before your trip.
  • Use a dry bag as an extra layer for larger gear.

Accessing Your Electronics While on the Water

You may need to check your phone for navigation or take photos while paddling. A waterproof case with a clear touchscreen window allows you to use your phone without removing it. Alternatively, you can attach a lanyard to the case and wear it around your neck for quick access.

If you're using a dry bag, keep it within reach in the cockpit or attach it to the deck. For easy access, consider a small dry bag that can be clipped to your PFD. The Changing Poncho is a versatile piece of gear that can double as a changing room and a dry bag, but for electronics, a dedicated case is best.

  • Use a case with a touchscreen window for easy phone use.
  • Attach a lanyard to keep your case within reach.
  • Stow dry bags in the cockpit or on the deck.
  • Clip a small dry bag to your PFD for quick access.

Additional Tips for Keeping Your Gear Dry

While a waterproof case protects your electronics, don't forget other gear like keys, wallet, and snacks. Use a dry bag for these items, and consider a waterproof pouch for your phone if you're also using a camera. Always bring a spare battery or power bank, as cold water can drain batteries faster.

When paddling in rough conditions, secure all your gear in the kayak's hatches or tie it down. Even if your case is waterproof, it's better to avoid losing it overboard. Also, after your trip, rinse your waterproof case with fresh water and dry it thoroughly to prevent mold and corrosion.

  • Keep spare batteries in a dry bag.
  • Secure all gear in hatches or tie-downs.
  • Rinse and dry your case after each trip.
  • Store electronics in a dry place after the trip.

Protecting your electronics on a kayak trip is all about preparation and proper technique. Choose the right waterproof case, seal it correctly, and keep it accessible. With the right gear, like the MSR Bigfork Dry Daypack or the Changing Poncho from Therm-a-Rest, you can focus on enjoying the water without worrying about your devices. Explore our collection of water-resistant gear and find the perfect solution for your next paddling adventure.

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