Evidence & sourcing
Source Standards
TrainingBras.com uses a source hierarchy because a pediatric-development claim, a fabric-composition field and a retailer-availability note should not be sourced the same way.
1. Health and development claims
Statements about puberty, normal development, skin or other health-adjacent topics should rely on authoritative sources such as pediatric medical organizations, government health agencies, major pediatric institutions or peer-reviewed research. A brand or retailer may describe its product, but it is not our preferred authority for general developmental or medical claims.
2. Product specifications
For product-specific facts, the strongest source is normally the manufacturer: current product pages, official size charts, care instructions, technical specifications or product labels. When a manufacturer source is unavailable, a retailer may be used cautiously for a clearly identified manufacturer-supplied specification. Source quality is recorded rather than hidden.
3. Sizing information
Sizing claims require special care. We distinguish the manufacturer's published chart, our normalization of that chart and any later fit observation. We do not treat two labels as equivalent just because they share a name such as “Small.” Cross-brand comparison starts from measurements where the source data supports them.
4. Commercial and availability information
Price, stock status, retailer availability and return policies can change quickly. When these details are used, they should be tied to a current retailer or manufacturer source and treated as time-sensitive rather than permanent product facts.
5. TrainingBras.com observations
If the site later performs direct product inspection or testing, those observations will be labelled as our own. The testing method, sample limitations and date will be disclosed. We will not retroactively describe manufacturer-sourced profiles as hands-on reviews.
Source provenance labels
| Label | Meaning |
|---|---|
| Manufacturer direct | Official manufacturer page, chart, specification or label. |
| Manufacturer data via retailer | Manufacturer-provided information reproduced by a retailer; useful but lower confidence than a direct source. |
| Authoritative health source | Pediatric, government, institutional or peer-reviewed source appropriate to the claim. |
| TrainingBras.com observation | Future direct inspection/testing performed under a published protocol. |
Foundational references
- American Academy of Pediatrics / HealthyChildren.org — developmental guidance used for puberty-related context.
- Nemours KidsHealth — age-appropriate educational context about breasts and bras.
What we avoid
- using retailer marketing as medical evidence;
- citing search snippets instead of underlying sources when the source is available;
- copying one brand's size logic to another brand;
- presenting an old chart as current after a newer source is verified;
- hiding uncertainty when data coverage is incomplete.
See also the Editorial Policy, Review Methodology and Brand & Sizing Data Methodology.