How We Verify and Rank Baby Travel Gear
Every spec, policy, and ranking on this site is gathered and verified against real sources. Here is exactly how we do it.
How We Verify Specs
Every number on this site, from stroller weights to airline baggage dimensions, is checked against multiple independent sources. We weight each source by how close it is to the original data, then calculate our confidence before publishing.
Source Tiers
Not all sources are equal. An official brand page carries more weight than a blog post. We classify every source into five tiers:
The Verification Pipeline
For each product or airline policy, we follow a structured pipeline:
When Sources Disagree
Say three sources report a stroller weighs 6.2 kg, but one blog says 6.9 kg. The blog carries a weight of 0.3 while the three agreeing sources contribute 1.0, 0.8, and 0.7. Our confidence in 6.2 kg comes out well above 0.7, so we publish it. If sources were split down the middle, we would flag the value for manual review rather than guess.
How We Rank Products
Rankings are computed from measurable data, not opinions. Each product category uses a different formula tuned to what matters most for travel.
Strollers
Strollers are ranked on a composite of three equally weighted factors: how light they are, how small they fold, and what percentage of 48 airlines allow them as carry-on baggage.
See the stroller scoring details →
Car Seats
Car seats are ranked by airline compatibility (how many of 48 airlines they physically fit), certification coverage, and weight. A seat that fits more airlines and meets more international standards scores higher.
See the car seat scoring details →
Sleep Devices
Sleep devices are ranked primarily by the number of airlines that explicitly approve them by name. Secondary factors are weight and price. A product with named approval on 20 airlines outranks one accepted at crew discretion on 30.
See the sleep device scoring details →
Airlines
Airline family-friendliness is scored on two dimensions: gear flexibility (60% of the total) and family amenities (40%). Gear covers stroller carry-on, car seat certification breadth, sleep device policy, and checked gear allowance. Amenities cover bassinets, kids meals, preboarding, entertainment, and family seating guarantees.
How Often We Update
Every product spec and airline policy in our database has a last-verified date. We re-verify data as often as we can, prioritizing items that are oldest or most frequently viewed. When a value cannot be confirmed against current sources, it is flagged for manual review rather than left stale.
You can see how current each record is by checking the last-verified date shown on individual product and airline pages. If something looks wrong, we want to know about it.
Detailed Methodology
The sections below document the exact formulas and scoring criteria used across the site.
Verification: Source Tiers and Confidence
| Tier | Weight | Source Type | Examples |
|---|---|---|---|
| 1 | 1.0 | Official brand | Manufacturer product pages |
| 2 | 0.8 | Major retailers | Amazon, Target, John Lewis |
| 3 | 0.7 | Expert reviews | Wirecutter, Babylist, Good Housekeeping |
| 4 | 0.5 | Forums | Reddit, What to Expect |
| 5 | 0.3 | Personal blogs | Individual review sites |
Confidence Formula
If confidence exceeds 0.7, the value is auto-updated. Below that threshold, the field is flagged for manual review.
Numeric Tolerances
Sources often report slightly different numbers for the same product. We treat values as agreeing if they fall within these tolerances:
- Weight: ±0.2 kg
- Dimensions: ±1.0 cm
- Price: ±$5
Airline Policy Fields
Airline policy fields (enums and free-text) only require one Tier 1 source. The airline's own website is authoritative for its own policies, so there is no measurement variance to resolve.
Stroller Rankings
The composite score averages three normalized ranks:
| Factor | What it measures | Direction |
|---|---|---|
| Weight rank | How light the stroller is (kg) | Lighter is better |
| Fold size rank | Folded dimensions (L × W × H) | Smaller is better |
| Carry-on rank | % of 48 airlines allowing cabin carry | Higher is better |
Each rank is normalized to 0-1 (rank / total items with data), then averaged. Strollers missing weight or fold dimensions are excluded from the composite ranking.
Size Categories
| Category | What it means |
|---|---|
| Ultra-compact | Fits in overhead bins on most airlines |
| Compact | Fits some overhead bins, gate-check on smaller planes |
| Mid-size | Gate-check on most airlines |
| Full-size | Always gate-check |
Car Seat Rankings
Car seats are ranked by a composite of airline compatibility count, weight, and width. Compatibility measures how many of 48 airlines the seat physically fits (based on published max seat width limits). Lighter and narrower seats score higher.
Sleep Device Rankings
Sleep devices are ranked primarily by endorsed airline count (airlines that approve the specific product by name). Secondary factors are weight and packed size. Named endorsement counts more than general "allowed" policies.
Airline Family-Friendliness Scoring
Each airline receives a gear score (60% weight) and an amenity score (40% weight).
Gear Score Components (max 45 points raw)
| Component | Max Points | How it is scored |
|---|---|---|
| Stroller carry-on | 10 | yes with dims = 10, yes partial = 7, yes no dims = 4, conditions = 5, no = 0 |
| Gate check | 5 | free = 5, conditions = 3, no = 0 |
| Car seat certification | 10 | any = 10, none required = 8, single standard = 4, no = 0 |
| Car seat ease | 5 | no purchase + both facing = 5, no purchase = 3, purchase + both = 2, purchase only = 1 |
| Sleep devices | 10 | yes with named products = 10, yes general = 7, unclear = 3, no = 0 |
| Checked gear | 5 | 3+ items = 5, 2 items = 3, 1 item = 2, none = 0 |
Amenity Score Components (max 45 points raw)
| Component | Max Points |
|---|---|
| Bassinets | 8 |
| Kids meals | 5 |
| Family preboarding | 5 |
| Kids entertainment | 5 |
| Lap infant fee (free = 5, low = 4, moderate = 2, high = 0) | 5 |
| Changing tables (yes = 4, some = 2, no = 0) | 4 |
| Baby kit (yes = 4, premium only = 2, no = 0) | 4 |
| Family check-in | 4 |
| Family seating (guaranteed = 5, best effort = 3, none = 0) | 5 |
Raw gear and amenity scores are normalized to their respective weights (60/40 split), then summed to produce the overall score out of 100.