I bought these because they were the perfect quantity pack (three!) and the perfect size for TSA's requirements for carry on luggage: 3 ounces. However, they totally fail in their one job: keeping liquids contained. I took them on their first flight out of the store and one leaked. Darn! I'll give the other two a second chance. NOPE! They leaked on the second trip. They have all been chucked in the recycling bin. Do not buy these items.
Bottom Line No, I would not recommend this to a friend