A simple tow float adds an inflatable marker behind a swimmer; a dry-bag model adds a gear compartment and is larger to pack. Zone3 lists its basic float at 49 × 30 cm deflated with a waist leash, handle and reflective strips; its dry-bag model has 28 L of storage, dual air bladders and a 72 × 37 cm deflated size. Visibility details do not guarantee detection or replace a wearable PFD when rules require one.
Tow floats vary in size, attachment and storage. A simple float may pack smaller, while a dry-bag model adds a compartment but takes up more space. Compare the maker’s actual dimensions and capacity before choosing.
Compare the two common designs
| Design | Example maker details | Consider it when | Check before buying |
|---|---|---|---|
| Simple tow float | Zone3 lists its Recycled Swim Safety Buoy/Tow Float at 49 × 30 cm deflated, with a waist leash, carry handle and reflective strips | You want a compact inflatable marker and do not need the storage capacity of a dry-bag model | Confirm how it attaches and whether its size suits your swim and pack space |
| Dry-bag tow float | Zone3 lists its Recycled Safety Buoy/Dry Bag at 28 L, with dual air bladders around the storage compartment, an adjustable dual belt, leash and reflective logos; 72 × 37 cm deflated | You want the specific model’s integrated storage as well as a tow float | Check its closure instructions, capacity and larger packed dimensions |
These are product examples, not a ranking or a claim that every float has the same features. Zone3’s simple float and 28 L dry-bag buoy list different dimensions and features. Use the exact product page and instructions for the version you plan to carry.
Decide how much storage you need
If you plan to carry keys, a phone or clothing, check the compartment’s stated volume and how the maker says it closes. Do not infer waterproof performance from capacity alone; put valuables in a separate waterproof pouch if the manufacturer’s instructions do not clearly establish protection for your item. A larger dry-bag float also needs more pack space, even when deflated.
If you do not need to carry gear, compare the basic float’s attachment, color, reflective details and packed dimensions. A bright color or reflective strip can add a visible surface, but it cannot guarantee that another swimmer, boat or lifeguard will see you. Check local rules and race requirements, since some events have their own equipment instructions.
Keep tow floats separate from wearable PFDs
A tow float is towed behind the swimmer and is not automatically a wearable personal flotation device. Do not infer approval from a product name or marketing language. The U.S. Coast Guard’s life-jacket guidance says recreational vessels must carry an approved wearable PFD for each person onboard. If your activity or location requires one, check the exact device label and applicable rules; a tow float does not replace that check.
For a separate flotation decision involving children, see life jackets vs swim aids. If your open-water kit also includes thermal gear, compare swim wetsuit fit and temperature rules.
Browse open-water gear.
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Common questions
What is the difference between a tow float and a dry-bag buoy?
Both are towed behind a swimmer by a leash. A dry-bag buoy adds an integrated storage compartment; compare its listed capacity, closure instructions and deflated dimensions with a simpler float.
Will a tow float keep me safe in open water?
No visibility accessory can guarantee that another person or boat will see you. A tow float is not automatically a wearable personal flotation device; check event and local rules and the approval label on any device required for your activity.
How much can I put in a tow-float dry bag?
Use the exact model's stated capacity and instructions. For example, Zone3 lists its Recycled Safety Buoy/Dry Bag at 28 L; that figure applies to that model, not every dry-bag tow float.
Does a tow float count as a Coast Guard-approved PFD?
Do not assume so from the words 'safety buoy.' The U.S. Coast Guard says recreational vessels must carry an approved wearable PFD for each person onboard; check the exact device label and the rules for your activity.