Yes, they all are. Along with all the other great bonuses our products bring, such as being eco-friendly, super effective, luxurious quality, economical in both value and use, we have ensured in their creation that they comply with the British Airport Authority and Transport Security Administration's liquid's rules and remain carry-on approved! For further information please read the UK Hand luggage Restrictions Advice For UK Airports Here and/or the relevant USA Transportation Security Administration FAQ page here.