A tow float and signal color aren't decoration: why visibility in open water decides your safety, and how to use them correctly.
The question many people only ask after something nearly went wrong: how are boats, stand-up paddlers or lifeguards even supposed to see me in the water? From above, a swimmer's head in chop is practically invisible — which is exactly where your safety gear comes in.
A tow float (also called a swim buoy) is an inflatable, usually orange or pink float you tow behind you on a short belt. It makes you visible to others, doubles as a buoyancy aid to hold onto if you're exhausted, and can even carry waterproof gear like a phone in an emergency. In many places it has become the de facto standard for unsupervised open water routes — not because it's required, but because experienced open water swimmers simply always bring one.
Then there's the signal color of your cap: pink, orange or yellow stand out clearly against water, while black or dark blue is barely visible in chop from just 20 meters away. The difference between "being seen" and "being missed" often comes down to color alone.
It's a visibility device first, not a rescue device in the strict sense — you can hold onto it and rest briefly, but it's no substitute for a life jacket. Its main job: making sure boats, jet skis and other water users see you in time.
The belt goes around your hips, with the line behind you usually 1.5 to 2 meters long. That way the float trails freely without interfering with your kick, but always stays within reach if you need to grab it.
Neon colors like pink, orange and yellow reflect the most light and are visible from the greatest distance in moving water. Black or navy caps might look sleek, but they vanish into wave patterns.
Especially at spots you know well, the float often gets left behind — a mistake. Boat traffic, weather changes and other swimmers aren't predictable, no matter how many times you've swum this lake before.
Attach the float before you get in, not once you already feel uneasy. Make it as automatic as putting on your cap — that way you never forget it exactly when you need it most.
A float makes you more visible, not invisible to danger. Still stay within sight of shore or an escort boat, especially in waters with boat traffic. If sudden exhaustion hits: grab the float, roll onto your back, breathe calmly and signal for help instead of continuing alone.
Tape a small strip of reflective tape onto your float if you also swim at dusk or very early morning. Boat headlights make reflective material light up — an effect plain signal color can't deliver in low ambient light.
Yes, that's often where boat traffic is densest. A float makes you visible to skippers and other water users who otherwise notice a single swimmer's head late, if at all.
Neon colors like pink, orange and yellow stand out most against water, whether in sun, overcast light or light chop. Dark colors like black or navy nearly blend into the water instead.
Yes, that's what it's built for — it offers enough buoyancy for a brief rest. But it's no substitute for a real life jacket and isn't a rescue device for a genuine emergency involving unconsciousness or severe exhaustion.
It's still recommended, especially once you swim beyond the immediate shore zone. Lifeguards can keep track of you more easily, and you stay visible independent of their attention.
Open Water: Reading Currents, Rip Currents and Waves