A double-sided gym flooring towel (10"), comprising: a fabric layer (11") being a foldable piece of soft cloth with water absorption capacity, said fabric layer (11") having a rectangular shape with two opposing long sides and two opposing short sides, said fabric layer (11") defining on each of opposing top and bottom surfaces thereof a central zone (C') and two opposing lateral zones (S'), said two lateral zones (S') being respectively located at two opposite lateral sides of said central zone (C') and respectively disposed adjacent to the said two opposing short sides; the towel further comprising: a first anti-slip layer (21") bonded to said top surface of said fabric layer (11") within the respective said two opposing lateral zones (S'), said first anti-slip layer (21") comprising a plurality of first openings that expose said top surface of said fabric layer (11"), said first openings being respectively surrounded by said first anti-slip layer (21") and kept apart from one another; and a second anti-slip layer bonded to said bottom surface of said fabric layer (11") within the respective said two opposing lateral zones (S'), said second anti-slip layer comprising a plurality of second openings that expose said bottom surface of said fabric layer (11"), said second openings being respectively surrounded by said second anti-slip layer and kept apart from one another; wherein in said first anti-slip layer (21") within the two lateral zones (S') of said top surface of said fabric layer (11") and a part of said first anti-slip layer (21") are exposed to the outside; in said second anti-slip layer within the two lateral zones (S') a part of said bottom surface of said fabric layer (11") and a part of said second anti-slip layer are exposed to the outside; characterized in that the first and second anti-slip layers are flexible layers, wherein when the fabric layer (11") is folded, the first anti-slip layer (21") and the second anti-slip layer are curved with the fabric layer (11"). a fabric layer (11") being a foldable piece of soft cloth with water absorption capacity, said fabric layer (11") having a rectangular shape with two opposing long sides and two opposing short sides, said fabric layer (11") defining on each of opposing top and bottom surfaces thereof a central zone (C') and two opposing lateral zones (S'), said two lateral zones (S') being respectively located at two opposite lateral sides of said central zone (C') and respectively disposed adjacent to the said two opposing short sides; the towel further comprising: a first anti-slip layer (21") bonded to said top surface of said fabric layer (11") within the respective said two opposing lateral zones (S'), said first anti-slip layer (21") comprising a plurality of first openings that expose said top surface of said fabric layer (11"), said first openings being respectively surrounded by said first anti-slip layer (21") and kept apart from one another; and a second anti-slip layer bonded to said bottom surface of said fabric layer (11") within the respective said two opposing lateral zones (S'), said second anti-slip layer comprising a plurality of second openings that expose said bottom surface of said fabric layer (11"), said second openings being respectively surrounded by said second anti-slip layer and kept apart from one another; a first anti-slip layer (21") bonded to said top surface of said fabric layer (11") within the respective said two opposing lateral zones (S'), said first anti-slip layer (21") comprising a plurality of first openings that expose said top surface of said fabric layer (11"), said first openings being respectively surrounded by said first anti-slip layer (21") and kept apart from one another; and a second anti-slip layer bonded to said bottom surface of said fabric layer (11") within the respective said two opposing lateral zones (S'), said second anti-slip layer comprising a plurality of second openings that expose said bottom surface of said fabric layer (11"), said second openings being respectively surrounded by said second anti-slip layer and kept apart from one another; wherein in said first anti-slip layer (21") within the two lateral zones (S') of said top surface of said fabric layer (11") and a part of said first anti-slip layer (21") are exposed to the outside; in said second anti-slip layer within the two lateral zones (S') a part of said bottom surface of said fabric layer (11") and a part of said second anti-slip layer are exposed to the outside; characterized in that the first and second anti-slip layers are flexible layers, wherein when the fabric layer (11") is folded, the first anti-slip layer (21") and the second anti-slip layer are curved with the fabric layer (11").