We have the Camelbak Eddy but the DCs chew the spouts and forget to close them in their bags.
We also have Sistema but the lids don't seem to fit after a while, or maybe they just aren't interchangeable and we've lost one bottle and a different lid?
DD also tends to put hers in her bag without closing it so again they leak.
Are there bottles where the lid closes automatically?
DS chews everything and the standard sports caps last about a week.