Mason Pearson BN1 vs BN4: Keep Brush Dimensions and Cleaning-Brush Contents Separate

Short answer: Mason Pearson BN1 and BN4 both list boar bristle and nylon tufts, but their dimensions and included accessories differ. The manufacturer lists a cleaning brush with BN1 and explicitly excludes it from BN4. “Bristle & Nylon” identifies a material combination; it does not mean the brushes have the same footprint or arrive with the same items.

Manufacturer fields, kept side by side

These are the manufacturer’s current UK website fields checked on 12 October 2026. Overall length and head length describe different parts of the brush. The numbers are listing specifications, not our measurements of a purchased item. Retailer bundles may add items, so keep their written contents beside the manufacturer record.

A practical fit record before ordering

For a travel bag, drawer or storage case, create an empty record with the available length and width, the selected brush’s overall dimensions, any case padding and the source date. Measure the storage space rather than estimating from a product photograph. Do not compare the brush’s head length with the whole case length; that omits the handle.

Our editorial suggestion is to separate “space fit” from “hair suitability.” A smaller footprint may help with storage, but the dimensions do not prove an individual brushing experience. We have not used either brush and do not rank the models by comfort, scalp effects or results.

Check the accessory rather than infer authenticity

1. Record the exact code: BN1 or BN4, the selected colour and the seller’s listing date. A series name without the code leaves the comparison incomplete.
2. Save the seller’s box-content statement. Does it follow the manufacturer’s listing, or is a separately described retailer bundle offered?
3. Keep an included cleaning brush distinct from a liquid cleaner or another accessory. Similar cleaning-related names are not an itemized packing list.
4. If the delivered contents differ from the written order, ask the seller for an explanation using the model and order record. The discrepancy alone is not an authenticity finding.
5. Request the care instructions for the exact brush. Box contents do not establish a universal washing or cleaning method.

What the shared material description cannot answer

A bristle mix is one field in a product identity record. It does not establish that two sizes perform identically, nor that every item using similar wording comes from the same manufacturer. Product images, code, dimensions and documented seller information remain separate pieces of evidence. Keep a missing detail marked as missing instead of filling it from another model’s page.

Sources and limits

Manufacturer pages checked 12 October 2026. The comparison concerns BN1 and BN4 website specifications and contents; the fit record and purchase questions are original editorial aids. No product handling, authenticity examination, cleaning experiment, clinical assessment or price comparison was performed. Local stock, retailer additions and country-specific terms were not verified.

Mason Pearson: Popular BN1 dimensions and box contents · Mason Pearson: Pocket BN4 dimensions and box contents