The waterproof construction assists in preventing bacterial integration, while the non-metal construction makes them compatible with virtually any pH liquid. The up-locking pumps are leak-free and therefore well-suited for travel--they can be transported in any position without content discharge. The actuator, bellows, and closure can all be colored individually. Decorating options include labeling, silk screening and hot stamping. Available in 24-410 and 28-410 closure sizes. Custom colors available.