What should be the letter next to Coconut 350?

The letter next to Coconut 350 should be SPLY-350.

Coconut 350 has a unique design style and is expensive. The design of this shoe is very unique. Primeknit, breathable woven material, with high kinetic energy patented by Adidas, gives back to the land of science and technology. It also uses a comfortable sock design. This kind of shoes with monochromatic pattern is simple and generous, with rich details, and uses thick shoelaces, and the heel is equipped with canvas basket, which is suitable for various styles. Full palm boost adds a little comfort to fashion.