How often do I service an inflatable?

Visual inspection every trip; full annual service (weigh CO2, oral-inflate test, check cartridge expiry); replace bladder/PFD at 10 years.

Will a HIT auto-inflate in heavy rain?

No — Hammar HIT triggers on water pressure at ~4 inches submerged, not on surface wetness. That's why it's the offshore standard.

Can I wear my PFD over foul-weather gear?

Yes, but adjust the straps to fit over the layers. A PFD adjusted for shorts won't fit over a heavy jacket.

Do I need a different PFD for sailing vs kayaking?

Sailing: any USCG Type II/III/V — inflatables most popular. Kayaking: high-back foam (lower bulk in front, fits kayak seats).

Is a belt-pack legal as my only PFD?

Yes for adults — it's a USCG-approved Type V/III when worn. Must be worn (not stowed) to count toward the wear-when-required laws in some states.

How much CO2 is in the cylinder?

Standard adult auto-inflate uses a 33g CO2 cartridge providing ~35 lb of buoyancy when fully inflated. Belt-packs use 16g cartridges (~22 lb buoyancy). Always replace with the exact gram weight specified by the manufacturer.

What's the difference between USCG-approved and ISO/CE-rated PFDs?

Most European-spec PFDs (ISO 12402) are NOT USCG-approved and don't count toward the carriage requirement on US waters. Buy USCG-approved models for any boat operating in the US, even if you also cruise abroad.

Best PFDs for Boating in 2026

Q: Inflatable or foam for kids?

Foam, always. Kids must wear a Type II/III foam PFD until age 16 by USCG rule, and inflatables aren't approved for under-16 use.

By Sam Halberstadt · Reviewed by Marina Chen

Editor · USCG-licensed Master 50 GT · Updated May 6, 2026

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Inflatable vs foam

Inflatable: low-profile, comfortable, hot-weather friendly. Auto-inflate on water contact (Hammar HIT) or pull-tab manual. Adults wear them all day; that's the entire game.

Foam Type II/III: bulky but always-on flotation, no servicing. Mandatory for kids under 16 by USCG rule. Right choice for non-swimmers, anyone with limited mobility, and anyone who might be unconscious in the water.

Belt-pack inflatable: smallest profile, manual inflation only. Legal as a single device for adults; popular with kayakers and PWC riders.

Auto-inflate trigger types

Hammar HIT (hydrostatic): triggers on water pressure at 4 inches submerged. Won't false-trigger on rain, spray, or heavy condensation. The premium standard for offshore PFDs.

Bobbin (cartridge): triggers when the bobbin dissolves on water contact. Cheaper, but can false-trigger in heavy rain or condensation. Replace the bobbin annually.

Manual: pull a tab to fire the CO2. Cheapest, requires you to be conscious. Good for confident swimmers in warm water.

Sizing and fit

Adult inflatables: most are universally sized via adjustable straps. Check chest size on the manufacturer's chart anyway.

Kids' foam: USCG sizes by weight (Infant <30 lb, Child 30–50 lb, Youth 50–90 lb). The PFD must lift the chin clear of the water — check by pulling up on the shoulders; if the PFD slides up over the head, it's too big.

Try it on with the clothes you'll wear (foul-weather gear in cold weather, swimsuit in hot). A PFD that fits in shorts may not fit over a winter offshore jacket.

Maintenance

Annual: weigh the CO2 cylinder (compare to label weight ±5g), inspect the bladder for pinhole leaks (oral-inflate and leave overnight), check the auto-inflate cartridge expiry date.

After every immersion: rinse with fresh water, air dry fully before stowing.

Replace the entire PFD every 10 years regardless of condition. UV degrades the bladder material even if it looks fine.

USCG Type categories explained

Type I (offshore): the highest buoyancy (22 lb), turns most unconscious wearers face-up. Bulky orange foam — required carry on commercial vessels offshore. Most recreational boaters keep one in a ditch bag, not on their body.

Type II (near-shore): 15.5 lb buoyancy, turns most unconscious wearers face-up. The orange horseshoe foam most parents recognize. Mandatory choice for kids in many states.

Type III (flotation aid): 15.5 lb buoyancy but does NOT reliably turn an unconscious person face-up. The category that includes most fishing, paddling, and watersports vests. The wear-rate winner because they're cut for movement.

Type IV (throwable): cushions and ring buoys. Required to be immediately accessible on boats 16 ft and over.

Type V (special use): inflatables, work vests, hybrid PFDs. Only count toward USCG carriage requirements if worn — that's the catch with inflatable belt-packs.