Korkilla teet mistä tahansa 28-30mm suuaukon halkaisijalla olevasta pullosta juomapullon. Kätevä esim autoon, pyöräreisuille matkajuotavien kanssa Professional silicone bite-valve for use on all standard bottles with 28 and 30 mm diameter opening. So you can drink from any water bottle with one hand without having to open a lock. Not 100% waterresistant but 100% practical - for example, very suitable on the bike or in the car.
