Parameters:
1. Name: Palm Teether
2. Packing: Blister cardboard packaging
3. Brand: platube
4. Age: 3 months or more
5. Teether size: about 8.5cm*9.5 cm/ 3.35*3.74 in
6. Packing size: about 17.5*9 cm/ 6.89*3.54 in
7. Material: food grade silicone ( BPA free, lead free, and no known harmful substance included.) This is a non-latex product, which won't make babies allergic, so that they could use it without concerns.
Explanations:
1. The first stage: before the growing of teeth
Before the growing of babies' teeth, their gum porcelain will feel uncomfortable. The teether of first stage could be put into a fridge, because the cool feeling can relieve swelling and pain of babies' teeth.
2. The second stage: 6 months
When babies are 6 month-old, a pair of deciduous central molars of the lower jaw will start to grow. At that time, a frozen teether is needed to massage delicate deciduous central molars, and sooth discomfort. The hard frozen teether can massage the gum porcelain, and stimulate the babies' brain development, because of its uneven surface.
3. The third stage: eight teeth of the upper and lower jaw are grown
When four incisors and four canines are grown, babies are recommended to use a lightweight teether, which has the same shape of pacified nipples, and is easy to catch. Its soft and hard texture layer can not only massage gum porcelain around the new-grown teeth, but also provide a similar chewing experience for babies.
4. The fourth stage: 1-2 years old
Babies grow deciduous molars when they are 1-2 years old. At that time, babies can choose a fixed teether, which can cover large molars, and won't hurt throat. Its hard and soft mixed texture layer can relieve swelling and pain from the growing of large molars, enhance teeth's development, and train babies' chewing ability. 
