Subheading 640110: Footwear; Waterproof with Metal Toe-cap, Rubber or Plastic Outer … etc.
Subheading 640192: Footwear; Waterproof, Covering the Ankle (but not the Knee), Rubber … etc.
Subheading 640199: Footwear; Waterproof, N.E.C. in Heading No. 6401, Rubber or Plastic … etc.