What Size Dry Bag Do You Need for Kayaking?
For most recreational day trips, a 10- to 20-litre dry bag is a practical starting point. It can usually hold a spare layer, lunch and a few essentials without becoming awkward to secure. Smaller 2- to 5-litre bags suit keys, medication and compact electronics, while overnight gear is usually easier to organise across several bags rather than one oversized sack.
The right size depends on the trip, the kayak’s storage layout and what genuinely needs protection. A large bag is not automatically better: it may not pass through a hatch, can be difficult to secure and encourages unnecessary packing.
Quick dry-bag size guide
| Bag size | Typical use | Best suited to |
|---|---|---|
| 2–5 litres | Keys, wallet, medication, small first-aid items | Short paddles and separating valuables |
| 5–10 litres | Phone case, snacks, hat, gloves and compact layer | Half-day trips |
| 10–20 litres | Spare clothing, lunch and day-trip essentials | Most recreational day trips |
| 20–30 litres | Bulky clothing or compact overnight equipment | Long days and light overnights |
| 30 litres and above | Camping equipment and group gear | Open decks, canoes or carefully planned expeditions |
Aqua Bound notes that dry bags range from very small to expedition sizes and identifies smaller bags for keys, identification, first aid, sunglasses and snacks, with larger bags suited to clothing and general gear.1 Paddling Magazine recommends checking the boat’s actual storage spaces before selecting volume, because a bag that works on a raft or paddleboard may not fit through a kayak hatch.2
Start with the kayak, not the bag
Measure the hatch opening and the narrowest part of the storage compartment. A bag can be smaller than the compartment but still fail to pass through the opening once packed.
Sit-on-top kayaks often carry dry bags in an open tankwell or beneath deck lines, while sit-inside kayaks may require several narrow bags that slide through separate hatches. The exact securing points and storage limits depend on the model.
When comparing kayaks for sale, look at usable storage areas, hatch openings and approved tie-down points rather than judging capacity from the kayak’s overall length.
Is 10 litres enough for kayaking?
A 10-litre bag is often enough for a short or half-day paddle when it contains only essentials. It may hold a compact insulating layer, snacks, keys and a small first-aid kit, but actual capacity depends on the bulk of the clothing and how much room must remain for the closure.
Paddling Magazine places 5- to 15-litre bags in the day-trip category for snacks, phones, cameras and layers.2 Do not fill a roll-top bag to the rim: Aqua Bound recommends leaving enough material to roll the top at least three times.1
Pack the items at home, close the bag correctly and test whether it fits the intended location before relying on it.
When a 20-litre bag makes more sense
A 20-litre bag gives more room for a dry change of clothes, lunch and weather layers. It can be a useful single day bag on an open sit-on-top, provided it can be secured without obstructing drainage, re-entry or access to safety equipment.
On a sit-inside kayak, a fully packed 20-litre bag may be too wide for the hatch. Paddling Magazine recommends smaller modular roll-top bags for kayak hatches because they are easier to distribute through narrow spaces.2
If the bag will sit on deck, check that it does not interfere with paddle strokes, rescue lines or visibility.
One large bag or several smaller bags?
Several smaller bags are often easier to pack around the hull and organise by purpose. Aqua Bound identifies 5- to 35-litre bags as useful modular storage, while Rafting Magazine recommends separating sleeping equipment, clean clothes, dirty clothes, hygiene items and frequently used gear.1
Modular packing also creates some redundancy. If one bag is damaged or closed incorrectly, every item is not exposed at once.3
For a day trip, a simple system might use one small bag for essentials and one medium bag for clothing and food. Avoid creating so many loose bags that the deck becomes cluttered.
Choose size by trip length
Trip length is only one factor, but it provides a useful starting point.
| Trip | Suggested approach |
|---|---|
| One to three hours | 2–10 litres for essentials |
| Full day | 10–20 litres, or two smaller bags |
| One night | Several 10–20 litre bags after a test pack |
| Multi-day | A modular system matched to hatch openings and load capacity |
An overnight trip does not automatically require one very large bag. Clothing, sleeping equipment and food may pack more efficiently in separate shapes, and essential items remain easier to find.
Our kayak camping guide covers load planning, route choice and overnight safety in more detail.
What belongs in a day-trip dry bag?
Pack a dry insulating layer, food, medication, keys and other essentials appropriate to the route and season. Keep communication attached to the paddler or stored exactly as recommended for the device rather than buried beneath clothing.
A dry bag should not become a place for every optional item. Extra weight affects handling and must be included within the kayak’s usable capacity.
Our kayak accessories guide separates essential equipment from items that can wait.
Waterproof does not always mean submersible
Read the product’s stated protection carefully. Lightweight dry sacks may be designed for organisation inside another bag rather than prolonged exposure on an open deck. Some exterior pockets and zips are water-resistant but not watertight.1
Paddling Magazine distinguishes between roll-top bags, waterproof zippered bags and lightweight dry sacks, noting that performance and intended use vary.2
Do not assume that a low-cost roll-top bag will protect expensive electronics during extended submersion. Use a case or bag specifically rated for that purpose and follow its closure instructions.
How to close a roll-top dry bag
Leave enough empty material at the top, press out excess air without crushing the contents, align the opening and roll it down as directed by the manufacturer. Aqua Bound recommends at least three rolls for the common roll-top design.1
Rafting Magazine advises against overfilling because an overpacked bag may not close properly. It also recommends placing sharp or pointed objects centrally and protecting them so they cannot puncture the material.3
Clip the buckle only after completing the required rolls. Do not treat the buckle as a substitute for rolling the seal.
Keep sharp objects away from the fabric
Fishing hooks, knives, tools, camera mounts and stove components can puncture a dry bag from inside. Use protective covers or a rigid container where appropriate.
Rafting Magazine recommends packing soft items at the bottom and keeping hard or pointed items away from the bag wall.3 Check the exterior for abrasion after dragging or repeated contact with fittings.
A dry bag with a hole should be repaired using the manufacturer’s approved method or replaced before it protects critical equipment again.
Where should the bag go on a sit-on-top kayak?
Use the kayak’s approved tankwell, hatch or attachment points. The bag must not block scupper holes, interfere with the seat or restrict getting back onto the kayak after a capsize.
Secure it so it cannot slide across the deck, but do not create a complicated web of loose cords around the paddler. Test the setup in calm, shallow water.
Our sit-on-top capsize re-entry guide explains why deck equipment must leave a clear recovery path.
Where should the bag go in a sit-inside kayak?
Pack heavier items low and close to the centre of the kayak, subject to the manufacturer’s loading guidance. Several narrow bags can fit around the hull more effectively than one rigidly packed sack.2
Do not force a bag through a hatch or leave it where it obstructs footrests, bulkheads or control cables. Items required during an emergency should remain accessible.
Test the loaded kayak’s trim and handling in safe conditions before committing to a longer route.
Should a dry bag be attached to you?
Do not tie a large dry bag to your body while paddling. It can create an entanglement or towing hazard during a capsize.
Secure equipment to approved points on the kayak using a tidy system that can be released when necessary. Communication and personal safety equipment should be carried according to their own guidance, often on the buoyancy aid rather than inside a deck bag.
Keep straps and loose handles clear of feet, paddle strokes and moving parts.
Do dry bags float?
Some dry bags may float when properly closed with air remaining inside, but this varies with the bag, load, closure and damage.1 Floating is not the same as being suitable for towing, rescue or prolonged submersion.
Secure the bag even if the manufacturer says it floats. Current and wind can separate loose equipment from a paddler quickly.
Never depend on a dry bag as flotation equipment for a person. Wear an approved buoyancy aid.
Material choice: heavy-duty or lightweight
PVC or vinyl bags are often robust and water-resistant but heavier. Coated nylon bags are lighter and easier to pack but may be more vulnerable to sharp objects.1
Choose durable material for an exposed tankwell or rough fishing use. A lightweight sack may work well inside a protected hatch or backpack.
Inspect seams, closure surfaces and attachment points regularly. Material alone does not compensate for poor closure or unsuitable placement.
Pack by access priority
Place rarely used soft items at the bottom and frequently used items near the top. Rafting Magazine recommends organising bags by purpose and packing in access order so the entire contents do not need to be emptied repeatedly.3
Keep wet or dirty clothing separate from dry clothing. Label similar bags or use different colours to identify contents quickly.
Do not open the main dry-clothing bag for every snack or small item. A separate accessible bag reduces unnecessary exposure.
Test the complete system before the trip
Pack the actual equipment, close each bag correctly and fit everything into the kayak. Confirm that hatches close, drainage remains clear and the load does not interfere with entry, exit or rescue.
Include the bags and their contents when checking the kayak’s weight capacity. An overloaded or poorly trimmed kayak may paddle badly even if every item fits.
Browse our kayaks for sale and compare storage layouts and capacity before choosing a bag system for day trips or camping.
A practical recommendation for beginners
Start with one 10- to 20-litre roll-top bag for clothing and food, plus a smaller purpose-built waterproof case or bag for valuables. Adjust only after seeing what fits your kayak and normal route.
Smaller bags are easier to organise and may fit more places, but each one still needs a secure location. Avoid buying one oversized bag before measuring the hatch and test-packing your gear.
When choosing among kayaks for sale, consider the equipment you expect to carry and whether the kayak provides practical, secure storage for it.
Frequently asked questions
Is a 10-litre dry bag big enough for kayaking?
It is often enough for a short or half-day paddle with snacks, essentials and a compact layer. Bulky clothing or a full change may require 15 to 20 litres.
What size dry bag is best for a full-day kayak trip?
A 10- to 20-litre bag is a practical starting point for many day trips. The correct size depends on clothing, food, weather, hatch openings and the kayak’s approved storage points.
Is one large dry bag better than several small ones?
Several smaller bags are usually easier to fit around a kayak and organise by purpose. They also prevent one closure problem from exposing every item.
How many times should I roll a dry bag?
Follow the manufacturer’s instructions. Many common roll-top bags require at least three complete rolls, with enough empty material left at the top to form the seal.
Can I put my phone in a normal dry bag?
Only if the bag’s stated waterproof rating and closure are suitable. For critical electronics, use a purpose-built case or submersible bag and keep communication accessible.
Can I strap a dry bag to the kayak deck?
Only at suitable attachment points and without blocking drainage, rescue lines or re-entry. Keep straps tidy and confirm the bag cannot slide or snag.