Customize Clothes 2nd version.
That version have a softer font & is more abstract.
The blue part of the symbol stands for individuality & standing out of the crowd with your own customized clothes from spreadshirt. (the “i”point from “shirt” is emphasing this fact of “your own shirt/label/something special”)
The grey part of the symbol stands for spread. In addition with the blue part of the symbol it is result in/meaning:
“spreadshirt, your own label”