CAIRN
Open Water Swim Buoy with 15L Dry Bag & Built-In Whistle — Hi-Vis Waterproof Tow Float for All-Season Swimmers
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Built for open water
Seen in any water. CAIRN is a hi-vis tow float and 15 litre dry bag in one — a separate air chamber to rest on, sealed storage for what has to stay dry, and a built-in whistle for when sound carries further than sight.
Built for cold water and all conditions. CE / UKCA certified. Engineered in Scotland.
One buoy, every condition
Open Water
Be seen by boats and spotters across lakes, lochs and coastline. Tow your dry kit behind you.
Triathlon
Train safe in the swim leg with high-visibility colour and a low-drag tow profile.
Kayak / SUP
Keep phone, keys and layers dry and clipped while you're on the water.
Be seen. Stay dry. Swim further.
Visibility is the single biggest safety factor in open water. The CAIRN keeps a high-contrast marker on the surface above you, so spotters, kayakers and boat traffic can see where you are — while your phone and dry layers stay sealed inside.
The CAIRN is a visibility and dry-storage aid. It is not a personal flotation device or lifejacket, and must not be used to support a swimmer's body weight. Always swim within your limits, in supervised water where possible.
No. It's a visibility and dry-storage aid for open-water swimmers — not a personal flotation device or lifejacket. It should never be relied on to support a swimmer's body weight.
15 litres of waterproof dry storage — comfortably a phone, keys, a towel and dry layers for after your swim.
Yes, when the roll-top is closed with at least three folds and clipped. Keep electronics in the inner pouch for extra protection.
Yes. It tows behind you on an adjustable waist leash, and the high-visibility colourways make you far easier to spot in open water.
