Cored wire [conventional crotch]].

Core-spun silk [super elastic crotch]]

Core-spun silk [no mark T crotch]]

Core-spun silk super elastic [increase fertilizer]]

Three silk stockings can be cut at will [super elastic plus crotch]].

Four-way velvet cut at will [super elastic crotch]]

Four-way velvet cut at will [no mark T crotch]]

Four-way arbitrary shear [increase fertilizer]]

Ultra-thin and highly transparent plain socks [plus crotch]]

Ultra-thin high permeability plain socks [line crotch]]