# Flotation & Life Safety A personal flotation device keeps a head above water, either on its own (foam) or by inflating (CO2, manual or automatic). The Coast Guard weight band and performance level it is rated for decide who it fits and how rough the water can get. Throwable devices like ring buoys are a separate buy. ## How it works A PFD is rated by how much lift it gives a body in water and whether that lift is always present or has to be triggered. Inherent (foam) designs are always buoyant: closed-cell foam panels sized to the US Coast Guard's weight bands (infant, child, youth, adult). Inflatable designs stay flat until a CO2 cartridge fires, either manually (a pull tab) or automatically (a bobbin that dissolves in water); hybrids add a little permanent foam so they still float some if the gas never fires. Both the US Coast Guard's older Type I to V system and the Newton-based Level system (50 to 275) that is replacing it grade the same thing: how much buoyancy, and whether it is enough to roll an unconscious wearer face up. Throwable devices, never worn, carry their own lower buoyancy minimum. [1] [2] ## How an expert narrows the choice ```mermaid timeline section 1 · Worn or thrown throwable : ask Mounted, or carried in hand : skip Size band, How it floats, Where it's rated for, Performance level, Turns an unconscious wearer face up, Off-limits for kids or weak swimmers wearable : ask Size band, How it floats, Where it's rated for : skip Mounted, or carried in hand section 2 · Size band Infant, child, youth, or adult size? section 3 · How it floats manual_inflation / automatic_inflation : ask Off-limits for kids or weak swimmers inherent_foam : skip Off-limits for kids or weak swimmers section 4 · Where it's rated for rough or offshore : ask Performance level, Turns an unconscious wearer face up near shore : skip Turns an unconscious wearer face up ``` 1. **Worn or thrown.** Wear it, or throw it to someone? Throwable devices have no fit, no inflation mechanism and no activity rating; mounting and visibility matter instead. This removes a small but completely different slice of the catalog before anything about fit or inflation applies. If throwable: ask Mounted, or carried in hand; skip Size band, How it floats, Where it's rated for, Performance level, Turns an unconscious wearer face up, Off-limits for kids or weak swimmers. If wearable: ask Size band, How it floats, Where it's rated for; skip Mounted, or carried in hand. 2. **Size band.** Infant, child, youth, or adult size? The US Coast Guard fixes four weight bands; an adult jacket will not support a child and a child jacket has nowhere near enough buoyancy for an adult, so this removes most sizes before anything else. 3. **How it floats.** Foam, manual inflate, auto inflate, or hybrid? Foam never needs arming or checking. Inflatables need a full cylinder and are not approved for under 16 or weak swimmers, which changes what to ask next. If manual_inflation or automatic_inflation: ask Off-limits for kids or weak swimmers. If inherent_foam: skip Off-limits for kids or weak swimmers. 4. **Where it's rated for.** Near shore, open water, or rough or offshore? This is the plain-language door into the Newton performance level: near shore maps to Level 50-70, offshore to Level 150-275, which is also where turning an unconscious wearer face up becomes the point. If rough or offshore: ask Performance level, Turns an unconscious wearer face up. If near shore: skip Turns an unconscious wearer face up. ## What to surface ### Worn or thrown Whether the device is worn on the body or thrown to someone already in the water. Throwable devices (ring buoys, boat cushions) have no fit, no inflation mechanism and no activity rating; what matters is buoyancy minimum, visibility and being within arm's reach. Wearable PFDs are the opposite: fit, weight band, inflation type and performance level all matter, and US law requires a properly fitted wearable PFD aboard for every person, not just a throwable on deck. [1] [2] Values: wearable, throwable. Question to ask: Wear it, or throw it to someone? Used as: top-level split, filter. Data: derived from listing fields, backfill cost none. Always evident from the product's own type or title; a ring buoy or throw bag is never listed as anything else. ### Size band The US Coast Guard weight band the device is built for: infant, child, youth or adult. Buying the wrong band is the most common life-jacket mistake: an adult jacket will not keep a child's head up, and a child jacket has nowhere near enough buoyancy for an adult. The bands are fixed by weight, not age, so a big child may already need a youth size. [1] Values: infant, child, youth, adult. Question to ask: Infant, child, youth, or adult size? Used as: top-level split, filter. Data: on the listing, backfill cost low. Look for it as: Product title and size or age labeling, for example 'Youth Life Jacket' or 'Infant PFD'. If only a weight number is given, map it with the Coast Guard breakpoints: over 88 lb adult, 55 to 88 lb youth, 33 to 55 lb child, under 33 lb infant. Chart: category axis, ordered infant to adult. ### How it floats Whether the device is always buoyant (foam), inflates on demand (CO2 cartridge, manual or automatic), or both (hybrid). Foam never needs arming and cannot run out of gas, but it is bulkier and warmer. Inflatables are slim and cool but need a full, unspent cartridge to work, are not approved for under 16 or for weak and non-swimmers, and need a leak check every couple of months. [1] [2] Values: inherent_foam, manual_inflation, automatic_inflation, hybrid. Question to ask: Foam, manual inflate, auto inflate, or hybrid? Used as: top-level split, filter, shown on the card. Data: on the listing, backfill cost low. Look for it as: Product title and bullets, for example 'Automatic Inflatable Life Jacket' or 'Foam Life Vest'. Brand spec pages always state it. An 'inflatable' title without the word 'automatic' is almost always manual. The inherent_foam leg that drops age_use_restriction is an absence-based inference (the foam sections never state a restriction), not a quoted exemption; the same reason leaves hybrid without a leg either way. Chart: Comfort vs readiness map. ### Where it's rated for The water conditions the device's performance level is rated for, from calm near-shore water to offshore extremes. This is the plain-language door into the Newton-rated performance level: near shore maps to Level 50-70, open water with help further away to Level 100, and rough or offshore water to Level 150-275, which is also the point a jacket is built to turn an unconscious wearer face up. [1] Values: near shore, open water, rough or offshore. Question to ask: Near shore, open water, or rough or offshore? Used as: top-level split. Data: derived from listing fields, backfill cost low. Derived from performance_level once that is backfilled; no separate research needed. Chart: USCG/ISO performance scale. ### Off-limits for kids or weak swimmers Whether the label restricts the device from children under 16 or from weak and non-swimmers. Inflatable PFDs carry this restriction. Anyone buying for a child or a non-swimmer needs to know before choosing an inflation type, not after. [2] Used as: shown on the card, filter. Data: derived from listing fields, backfill cost low. True for manual or automatic inflation designs. Not stated by our sources for foam or hybrid designs, so leave unset rather than assume. The age-16 figure is stated only by boatus_types; uscg_wearing's nearby age rule (under 13) is a separate mandatory-wear law, not this restriction. ### Mounted, or carried in hand For throwable devices, whether it lives in a wall or rail bracket, sits on deck, or is a handheld bag you throw yourself. A bracket-mounted ring buoy has to be reachable and visible from where people actually fall in; a handheld throw bag is for someone already standing by ready to throw, which is a different placement decision on a boat or dock. [2] Values: wall or rail bracket, deck mounted, handheld bag. Question to ask: Mounted on a bracket, or a handheld bag? Used as: shown on the card. Data: derived from listing fields, backfill cost none. Evident from the product's own type or title, like device_role. ### Activity it's approved for The specific activity the label names it for, when it is a restricted-use design rather than general boating. A restricted-use jacket is only legal for the activity its own label names. A water-skiing vest, a paddling vest and a commercial whitewater vest are not interchangeable even at the same performance level, and owning one does not meet the carriage requirement for a different activity. [1] [2] Values: general boating, water skiing or PWC, whitewater or commercial, sailboarding. Used as: filter, shown on the card. Data: needs research, backfill cost medium. Stated on the label and brand spec page for restricted-use designs; treat as general boating when nothing restrictive is named. ### Performance level The buoyancy grade on the label: the Newton-based Level (50, 70, 100, 150 or 275) now replacing the older Type I to V system. The number is the device's whole safety case in one figure: 70 N, about 15.5 lb, is today's typical recreational jacket, while 150 and 275 are built to turn an unconscious wearer face up in rough or offshore water. [1] [2] Values: 50N, 70N, 100N, 150N, 275N. Used as: shown on the card, filter, sortable. Data: needs research, backfill cost medium. Printed on the mandatory label and on every brand spec page; a text-only scrape can miss it if the seller does not repeat the label text in bullets. Chart: USCG/ISO performance scale. ### Turns an unconscious wearer face up Whether the device is built to roll an unconscious wearer onto their back on its own. This is the line between a life jacket and a buoyancy aid. Old Type I and new Level 150/275 devices do this; Level 50 to 100 and Type III devices support a conscious person but do not reliably turn someone who has stopped moving. [1] Used as: shown on the card. Data: derived from listing fields, backfill cost low. Set from performance_level: true for Level 150/275 or Type I, false for Level 50 to 100 or Type III, unstated for Type V and hybrid designs unless their own label says so. Level 150's turning ability is a direct quote; 275's is inferred from the stated 'higher level, more turning ability' trend, not quoted for 275 itself. Chart: icon on the performance-level scale. ## What you give up - Foam never needs arming and keeps its buoyancy for years, but the panels that make that happen also trap heat and bulk, which inflatable wearers trade away. [2] [1] Board branch: "See more low-bulk inflatable PFDs". - Inflatables pack flat and feel like nothing until needed, but a spent cartridge, a slow leak, or being under 16 or a weak swimmer can mean no buoyancy at all. [2] [1] Board branch: "See more always-buoyant foam PFDs". - Levels 150 and 275 are built to turn an unconscious wearer face up in rough or offshore water, which takes more foam or gas and more bulk than the Level 50-70 vests paddlers and skiers prefer. [1] Board branch: "See more low-profile Level 50-70 vests". ## How to draw it **USCG/ISO performance scale** (scale, shows Where it's rated for, Performance level, Turns an unconscious wearer face up). Lines up performance levels from calm water to offshore so a buyer sees how far from help they can be before the number has to go up. Used today by US Coast Guard label icons, harmonized with European and Canadian standards. [1] [2] **Comfort vs readiness map** (two axis map, shows How it floats). Plots foam, manual inflate, automatic inflate and hybrid by upkeep against bulk, since no source draws that trade as a single picture. This is a proposal, nobody draws it this way yet. ## Words you will meet - **PFD**. Personal flotation device, the general term for anything worn or thrown to add buoyancy in water. - **USCG approval**. A Coast Guard testing and labeling program; only devices carrying its approval number count toward the legal requirement to carry one per person. - **Type (performance type)**. The older US classification, I through V, for what a PFD does and who it suits, now being replaced by the Newton-based Level system. - **Performance Level**. A buoyancy number in Newtons, 50 to 275, printed on newer US life jacket labels; higher means more lift and rougher water. - **Inherent buoyancy**. Buoyancy built into the device itself, usually closed-cell foam, that never needs activating. - **Hybrid PFD**. A PFD with a little built-in foam plus a CO2 cartridge, so it still floats some even if the gas never fires. - **Buoyancy aid**. A device that supports a conscious person who can still swim or adjust their position, unlike a life jacket, which turns an unconscious wearer face up. - **Throwable device**. A device meant to be thrown to someone in the water, never worn; ring buoys and boat cushions are the common forms. - **Label harmonization**. The newer Newton-based US labels were designed to be consistent with European and Canadian life-jacket standards; our sources name the harmonization but not a specific standard number. - **CO2 cartridge**. The single-use gas cylinder that inflates an inflatable PFD when fired; a spent one must be replaced before the device will work again. ## Where we made a call - Foam PFDs hold their rated buoyancy for years; inflatables only work with an armed, unspent cartridge. (confidence high). Both sources describe inflatables needing more upkeep, leak checks and cartridge replacement, than foam, which only needs an annual buoyancy check. [1] [2] - Inflatable PFDs are not approved for children under 16 or for weak and non-swimmers. (confidence medium). boatus_types states the age-16 figure three times; uscg_wearing supports only the weak/non-swimmer half, and its own nearby age rule (under 13) is a separate mandatory-wear law. Neither extends either rule to hybrid designs. [2] - Level 50 is a legitimate, currently sold US performance level, despite one line in boatus_types. (confidence medium). Sources disagree. boatus_types lists 50 among numbers on new Coast-Guard-approved labels, then separately says ratings below 70 aren't approved; uscg_wearing treats Level 50 as an ordinary option with no approval caveat. [1] [2] - Arm floats, water wings and inflatable pool toys are not life jackets and do not stop drowning. (confidence high). Only one source states this directly; we could not independently verify it with a second source in the time available. [3] - Level 70 covers most US recreational life jackets sold today, roughly the old Type III. (confidence medium). A single nonprofit boating-safety educator's read, not a market survey; treat as a rough sense of the market, not a measured share. [2] ## References 1. [Life Jacket Wear / Wearing your Life Jacket](https://uscgboating.org/recreational-boaters/life-jacket-wear-wearing-your-life-jacket.php) (regulator). Supports: Type and Level buoyancy minimums and the four weight bands; Inflation design types and the under-16/non-swimmer restriction; Annual foam testing and inflatable maintenance requirements; Life jacket versus buoyancy aid, face-up turning distinction. 2. [Types (of Life Jackets) - BoatUS Foundation](https://www.boatus.org/life-jackets/types/) (primer). Supports: Type I to V buoyancy minimums by inflation design; New Level 50-275 Newton label system, harmonized with Europe and Canada; CO2 cartridge and leak-check maintenance for inflatables; Throwable Type IV buoyancy minimums and restricted-use Type V labeling. 3. [Drowning Prevention for Curious Toddlers: What Parents Need to Know](https://www.healthychildren.org/English/safety-prevention/at-play/Pages/Water-Safety-And-Young-Children.aspx) (academic). Supports: Arm floats, water wings and inflatable toys are not life jackets and do not prevent drowning.