Which fabric is 100% cotton and spun, with a double filling knit and piece dyed?

• A. Jacquard Double knit
• B. Interlock
• C. Pique knit
• D. Rib knit

Answer: (B)

Interlock is a double-knit fabric made with two interlocking beds of needles, which creates a stable fabric with a smooth surface on both sides. It is typically produced from 100% cotton yarns that are spun, and it is commonly piece-dyed, giving an even, solid color throughout. This exact combination—100% cotton spun yarn, double filling knit fabric, and piece-dyed—fits the description perfectly. The other options describe different knit structures: jacquard double knit implies a patterned double knit, piqué knit has a textured, raised pattern, and rib knit centers on vertical ribs rather than the double-knit, two-layer construction.