Russian Navy Shirt which you can see here is an authentic Russian Navy shirt. Literally telnyashka means "body shirt" and indeed it is very comfortable - it is made of very soft 100% natural cotton fabric with density 180 g/sq.m. The strips are white and dark blue (dark blue strips mean Navy forces) and they are weaved, not painted as sometimes Chinese guys made falsified telnyashkas.
The telnyashka is suitable for everyday wearing, it can be used for wearing alone in warm time and to wear as underwear in cold time.
Important! The size of telnyashka is marked here in two different size systems - in Russian and international, they are separated by slash "/", for instance 50/L. This telnyashka has old Soviet time way of sizing - the number of a size (for instance 52) means a half circumstance of a chest in centimeters. So the size 52 means that the chest circumstance is 104 cm. You can take a measuring tape and measure your chest in the most wide part so you can determine quite exactly the size of a telnyashka which would fit you.