Ordered "Genuine Russian Navy TELNYASHKA T-Shirt - Blue Striped Short Sleeved Top".
The seller also claims that it is made of 100% 240g/sm Cotton."

Beware! That is completely incorrect and misleading information.

First, instead of blue striped t-shirt I have received black striped t-shirt. Not even dark blue but totally pitch dark black striped t-short.
Second,  it has nothing to do with Russian Navy as  the shirt is made in another country according to the actual  label. Guess where?
Third, the quality  is very poor: it is not made out of cotton but rather some cheap synthetic fabric. Also, the threads are sticking out of everywhere.

Lastly, the seller suspiciously changes names. The shirt was purchased from order, "Kubik Rubik" on June 6, 2018 and now it is under name "Epic Militaria".