When you’re dealing with water crossings or unpredictable weather, keeping your first aid kit dry isn’t optional. Wet bandages and soggy tablets are no use in an emergency.
That’s why we took a close look at the Sea to Summit Lightweight Dry Bag First Aid. It’s made to protect your most important supplies. It’s easy to see and properly waterproof, which makes it a simple, useful addition to your camp hygiene kit in wet conditions.
What’s in the box
A lightweight, waterproof dry bag made from bluesign approved 70D nylon, in high-visibility red with a clear TPU window, for storing and protecting first aid supplies.
What we like
- Feather-light weight of only 32 g
- Durable 70D bluesign approved nylon
- 10,000 mm waterproof head rating
- Handy TPU window for visibility
- White interior shows small items
What we don’t
- Not suitable for full submersion
- Roll-top needs 3 rolls to be safe
- Does not include medical supplies
Quick Specs
| Spec | Details |
|---|---|
| Brand | Sea to Summit |
| Material | Recycled 70D NylonTPU Window |
| Weight | 32 g1l |
| Dimensions (1L) | 11.2 × 9.4 × 16.3 cm |
| Sizes | 1 L (tested)3 L |
| Water rating | 10,000 mm Hydrostatic Head |
| Features | Clear TPU WindowD-ringOval BaseWhite Interior |
First look
The first thing you notice about the Sea to Summit first aid dry bag is the bright, high-visibility red. You won’t miss it in your pack, which is what you want in an emergency. We tested the 1 litre version, and at only 32 grams it’s very light, which helps if you’re counting grams.
The second thing I noticed is the clear TPU window on the side. It lets you scan the contents quickly, even when the bag is fully packed and sealed, which is a big improvement over solid-colour dry sacks. The Hypalon roll-top closure is sturdy, and the oval base stops the bag rolling off a sloping surface like a rock or a log while you’re grabbing your supplies. Overall the bag has the quality feel you’d expect from this brand.
Materials & Build QualityMaterials & Build Quality
Sea to Summit has a strong reputation for good materials, and the first aid dry bag is no exception. It’s made from a durable, bluesign approved recycled 70D nylon. The 70D nylon is a good balance between low weight and toughness. It’s strong enough to resist abrasion inside a backpack without adding bulk.
The exterior has a C0 non-PFC DWR (Durable Water Repellent) finish. Inside, the polyurethane coating is white. That’s not just for waterproofing: it makes small items like tablets or blister treatments much easier to find, even in poor light inside a tent. The seams are double-stitched and fully tape-sealed, which helps give the fabric its 10,000 mm hydrostatic head rating. The fabric keeps out rain, splashes and damp.
Ergonomics & WeightErgonomics & Weight
The Sea to Summit first aid dry bag is designed for easy access and to take up little space. The 1 litre size we tested is only 32 grams, so it’s a light thing to add to any trip. The larger 3 litre option is still only 47 grams and would suit a full multi-day kit. At just 11.2 x 9.4 x 16.3 cm, it squeezes into tight spots, like the glove compartment of your 4WD or a spare corner of your pack.
The best feature is the TPU window. In an emergency every second counts, and being able to spot the bandage or medication you need without fumbling through everything is a big advantage. The roll-top works well: roll it down three times, clip the buckle shut, and your supplies are safe. The D-ring attachment point at the buckle is also handy for securing the bag to the outside of your pack if you want it within arm’s reach.
Performance & FeaturesPerformance & Features
The Sea to Summit first aid dry bag keeps water out very well. With its 10,000 mm hydrostatic head rating it handles heavy rain and wet conditions without a problem. The one thing to remember is the limit of any roll-top dry bag: avoid full submersion. Water can seep through the rolled closure if the bag is left under water. For keeping out spray, mud and rain, it has worked without fault.
The white interior lining makes a real difference, because you don’t get the dark-hole effect of standard dry bags. The bright red colour also has a job: it makes the bag instantly recognisable and easy to find when stress levels are high. The bag doesn’t come stocked with supplies. The 1 litre size suits day-trip basics, and the 3 litre is the size for multi-day trips where you need a fuller kit.
Which Sea to Summit Dry Bag?
This First Aid Dry Bag is a version of the Sea to Summit Lightweight Dry Bag, in the same 70D nylon but made for a different job. Our Lightweight review compares the three versions side by side, and our dry bags guide has the heavier Big River, the Ultra-Sil and the Evac too.
Conclusion: Sea to Summit Lightweight Dry Bag First AidConclusion
The Sea to Summit Lightweight Dry Bag First Aid is a simple piece of safety gear that I think belongs in every pack. It protects your medical supplies with bluesign approved 70D nylon and a 10,000 mm waterproof rating, and the high-vis red colour and clear TPU window make the kit quick to find and check in an emergency. It isn’t made for full submersion, the top needs three rolls to seal properly, and it comes without any medical supplies. If you want a light, durable way to organise and waterproof your first aid kit, this is a very good one.
A light, waterproof dry bag that kept medical supplies dry in wet conditions.
The high-visibility red and the clear TPU window make the kit quick to find and check in an emergency, and the 70D nylon is durable enough for multi-day trips.
- Hikers
- Paddlers
- Emergency kits
Yes. At 32 g, with a 10,000 mm waterproof rating and a clear window, it keeps first aid supplies dry for little money. It’s not for full submersion and the supplies aren’t included.
