Review on 510 Central Ounce Squeeze Bottles by Amanda Nunez

The bottles are very thin but more importantly the flip tops do not leak. I have found that other types of flip tops often leak. I bought another brand in 1 ounce. Sized with the same type of flip top, and all 12 of them went through the flip top rather than the threads. This is 2 ounces. Bottles, flip tops are fine, even if you pour water in and then squeeze the bottle a little. The lids don't leak, neither do the threads. My only concern is that the thin walls of the bottle will wear out prematurely or get accidentally punctured. The rest of the bottles suit me.