To provide a pair of functional socks having easily wearable and having good air permeability in spite of having high sweat absorbance through forming in a shape similar to the toes of a person, and as a result, capable of increasing health of the feet.

This pair of socks is knitted by stages in a left-right asymmetry shape so that a toe part 5 has wide big toe part 5a and index toe part 5b and a narrow little toe part 5c. The socks are knitted by differentiating the angles of inclination by stages through knitting to narrow the width by stages so as to bring, on the basis of the horizontal bottom face Y of the toe part 5, the angles of inclination θ1 and θ4 of the front and back side parts Ab and Db of the big toe part 5a and index toe part 5b to 40-50°, the angles of inclination θ2 and θ3 of the side parts Bb and Cb thereof to 60-70°, and the angles of inclination θ6, θ7 and θ8 of the front and back side parts Aa, Ca and Da of the little toe part 5c to 40-50° and the angle of inclination θ6 of the side part Ba thereof to 60-70°.