Flat-pack 90 ml / 3 oz class silicone bottle Matador sells for leak-conscious packing.
Editors’ shortlist — published capacity + closure. Official 3 oz / 90 ml class capacity on matadorup.com and a cap-and-seal design the brand describes in public.
Single FlatPak bottles have listed about $12.99–$14 USD on Matador’s shop. Multi-packs cost more. Source: Matador FlatPak bottle. Desk research dated 2026-08-23. Confirm before you buy.
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FlatPak bottles exist so a toiletry kit does not stay cylindrical. Matador publishes the capacity in the 90 ml / 3 oz class — the number that matters at a security tray.
We do not invent a leak-test rating. Cap them as the instructions say; that is the whole sport.