PREMIUM QUALITY RATTLE SET. Toddlers adore real keys and sticks, but real keys are plenty of harmful bacteria, dirt and not smooth for teething. This set is adorable and absolutely SAFE! ALDER WOOD TEETHING. We use only alder wood for teethers. Do You know Why? ALDER wood is used in food industry and in medicine. The alder is extensively used for throat, gum and tooth problems and also to cure injuries. Natural alder wood has a very pleasant taste, so it encourages exploring it again and again in different places and in different variations. Besides alder wood doesn't have sharp grains. Our teethers don't cause an allergic reaction. Wood is always warm on touch. WHY WE USE ONLY HIGH TEMPERATURE TREATED WOOD? Is it possible to use green wood for unfinished toys? It means that our wood is not green wood or refurbished from old cabinet. All our teethers made from high temperature treated wood. What does it means for you? It means that wood is well dried and insects disinfected. So this wood can't contain insects and other live microorganisms like in green wood. The other side: dried wood can shrink from the water and return to the original size when dried. The green wood is always full of water and can't be dried by normal conditions like dried wood. That is why it can be very attractive to insects and other microorganisms. WHY IT'S PREMIUM QUALITY? We insist that natural and organic baby toy have to be without finishing except carefully made sanding and polishing. Varnish and paint hide all woodwork imperfections and wood quality. Even beeswax and oils can hide sanding imperfections more quickly. Our sanding and polishing consists of 5 stages. Each of them is starting from the beginning every time. So your toy is sanded 5 times repeatedly before it's ready! Our product is hand carved and highly polished. Limited quantity! Only for Your Baby!