Abstract: An interlock fabric with a lining wherein, for the front fabric, plain stitches are formed using 100% synthetic fiber yarns A, B, D, E, G, H, J, K, M, N, P, Q, S, T, V and W, and for the back fabric, use is made of yarns of a natural fiber having excellent sweat-absorption or blended yarns of the natural fiber with other fibers C, F, I, L, O, R, U and X whereby the under yarns C, F, I and L form purls at the back vertical rows D.sub.1, D.sub.3 and at the same time, are seamed to the knits at the front vertical row C.sub.2, while the under yarns O, R, U and X form purls at the back vertical rows D.sub.1, D.sub.3 and at the same time, are knit-seamed by a tuck stitch at the front vertical row C.sub.4, so that the front fabric has a flat surface due to the plain stitch and the back fabric has honeycomb-like gaps a due to the tuck stitch .