Campus flaska med klafflock 600 ml Little Dutch - Little Farm

The little click when the cap shuts is weirdly satisfying, and it hasn't leaked once in my son's backpack. The push-button lid means he can open it one-handed, which is a lifesaver on the bike ride to school. Fizzy water goes in fine too, no spraying everywhere.

Took this to the park for my daughter and it survived being dropped twice on concrete without a scratch. The button pops the lid open so she can drink one-handed, and it hasn't leaked a drop in her backpack.

My daughter can finally open her own water bottle thanks to the push-button lid, and she loves that the cap stays up while she drinks. It's survived a few drops on the playground already and hasn't leaked in her backpack once.