The L16 best mens hair systems has a fine welded mono base overlaid with 1” PU perimeter on back and sides for extra sturdiness. Fine Welded Mono is not as soft as French lace, it is a little big rigid, but has good shape and contour and also more durable. The 100% human hair (synthetic available) has bleach knots and a graduated front hairline with single hair single knots, giving a natural appearance and good top view. Even if you like a definite parting, the base of the L6 best mens hair systems is invisible if with bleached knots. With an undetectable front hair line, this best mens hair system is also totally breathable. The L6 best mens hair systems is suitable for light to heavy density and is ideal if you want a breathable and natural look but prefer the the rigid, durable fine welded mono but are not too concerned about softness.