II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.49 Men's or boys' knitted or crocheted sweaters of linen, each with 9 or fewer stitches per 2 centimeters measured in the direction the stitches were formed (provided for in subheading 6110.90.90) Free No change No change On or before 12/31/2020 . 1232. Girls' cotton knit coveralls or jumpsuits Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.50 Girls' knitted or crocheted coveralls or jumpsuits, of cotton (provided for in subheading 6114.20.00) Free No change No change On or before 12/31/2020 . 1233. Neoprene wading socks Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.13.51 Socks with uppers comprising neoprene measuring 2.5 mm in thickness and covered on both sides with jersey knitted fabric of nylon