13.6 cm, 49.5 g and 0.065 mm: what product specifications mean

Read the label beside the number

A larger or smaller figure is not automatically better. First check whether it describes the whole item, one component or the contents of a pack. These examples use FOI’s current product materials; specifications are not performance rankings.

13.6 cm: the mini brush’s length

FOI’s Mini Cushion Hairbrush is listed as 13.6 cm long. Compare that with the inside of your usual bag, leaving space for the head’s width and other belongings. Length alone cannot confirm that an item will fit a particular pouch.

Photo angles and cropping can change the impression of scale. Measured dimensions are a more useful starting point. View the mini brush.

Approximately 49.5 g: the listed product weight

The same brush has a listed weight of about 49.5 g. Do not automatically include packaging, a separate pouch or other supplies in that figure. “Approximately” also avoids implying that every item weighs precisely the same. Weigh your complete packed bag if you have a particular limit.

Head size and overall length are different

The wide-head toothbrush has a stated 45 mm head length. The children’s brush lists a 1.5 cm head and a 12.5 cm overall length. Identify the measured part before making a comparison.

Adult and children’s models have different intended users and constructions. A size comparison alone cannot decide which is better. See the adult selection guide and parent’s guide.

Filament diameter and net contents

The 0.065 mm specification for the ultra-soft adult and children’s brushes describes filament diameter, not head thickness. It does not replace consideration of handling and correct use.

The toothpaste’s 130 g describes net contents per tube, not tube length or an ingredient percentage. For bundles, check tube count separately. Our toothpaste label guide explains more.

Check again when it arrives

Match the product name, measured part, unit and bundle contents. If the pack and sales page differ, retain the packaging and ask the seller to clarify.