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TSA rules guides
A focused set of CarrySizer guides tagged TSA rules. Thin tag pages stay noindex until they have enough useful depth.
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Can You Bring a Christmas Tree on a Plane?
Artificial trees are allowed; real trees face agricultural restrictions. Here's what TSA, USDA, and airlines say about flying with holiday décor.
Can You Bring a Massage Ball on a Plane?
Massage balls of all types — foam, rubber, spiky, lacrosse, vibrating — are allowed in carry-on and checked luggage. Here's what you need to know.
Can You Bring an Arc Lighter on a Plane?
Arc lighters are allowed in carry-on (one per passenger) but banned from checked luggage. Torch lighters are banned from both. Full TSA and IATA rules.
Can You Bring Dry Ice on a Plane? Limited Quantity
Dry ice is allowed on planes up to 2.5 kg per passenger in vented packaging. You must declare it to the airline. Here's what you need to know.
Can You Bring Hot Food on a Plane?
Temperature is not a TSA concern — hot food is allowed through security. But liquid-based foods like soup and curry face the 3-1-1 rule.
Can You Bring Scissors on a Plane? (2026 Rules)
TSA allows scissors with blades under 4 inches. UK and EU ban blades over 6 cm. Australia bans all pointed scissors in cabin. Full country-by-country breakdown.
What's Not Allowed in Carry-On Baggage: Full Guide
Complete list of items banned from carry-on bags: sharp objects, tools, firearms, oversized liquids, lithium batteries, and self-defense items. TSA vs EU rules.
Power Banks & Batteries on Planes: TSA & Airline Rules
Power banks under 100 Wh are allowed in carry-on only. Over 100 Wh requires airline approval. Over 160 Wh is banned on passenger aircraft entirely.
Deodorant in Carry-On: Rules for Every Format
Stick, roll-on, aerosol, gel, crystal — each deodorant format has different carry-on rules. Here is what you can bring and in what size.
Flying With Vitamins, Supplements & Protein Powder: Full Guide
TSA and EU rules for carrying vitamins, protein powder, creatine, pre-workout, and supplements. What's allowed, what causes delays, and what to check.
Can You Bring Supplements & Vitamins on a Plane?
Pills and capsules fly freely. Powder supplements over 350 ml face extra screening. Protein powder is legal but may be swabbed. Here's what to expect.
Can You Bring a Water Bottle Through Airport Security?
Rules for bringing water bottles through airport security: empty bottles are allowed, where to fill after the checkpoint, and the best bottles for carry-on
Medication in Carry-On: TSA & Global Security Rules (2026)
TSA rules for liquid medications over 100 ml, EU security rules, how to pack prescription drugs, and tips for insulin, EpiPens, and medical devices.