Bob Wigs can come with a closure construction or a lace frontal construction. Bob Wigs come in 10 inches, 12 inches, and 14 inches. You can add more hair by purchasing an extra bundle with your wig for more added fullness and or thickness. The lace on the wigs can be in HD or Transparent Lace. The Lace closures can be in different sizes to include 4x4 or 5x5. The lace frontal wigs can be in different sizes to include 13x 4 or 13x 6.