This is a Pu-erh variety sample pack including four 25g samples:

50g X raw premium loose
50g X raw XiaGuan Tuocha 
50g X Golden Award Brick
50g X raw premium cake

The sample pack is constructed to give pu-erh beginners a change to taste some very basic form of  Pu-erh, raw and ripened, loose and compressed. Pu-erh tea is a family of teas, defined as produced from the tea leaves from the arbor tea trees in the the Yunnan Province.  

There are a few unique characteristics of Pu-erh teas, one being post-fermentation. Similar to premium wine in this regard, the more a premium pu-erh is aged, the  better the quality. There is however a big variation within the family, depending on the area of harvesting