Pallets made of synthetic resins

In a pallet made of a synthetic resin of the type comprising upper and lower deck boards, and a cord shaped slip preventing member made of relatively soft and flexible material and secured to at least one of the upper and lower deck boards of the pallet, at least one of said upper and lower deck boards being provided with a groove for receiving said slip preventing member, the improvement wherein said slip preventing member has a height larger than the depth of said groove so as to project beyond the deck board surface and the width of said groove is larger than that of said slip preventing member so that both sides of the slip preventing member are spaced from both side walls of said groove by a distance such that upon placing an object upon the pallet surface, the slip preventing member can deform in a direction parallel to the plane of the deck board surface to completely fill said groove so that the slip preventing member is able to compress in a direction transverse to the plane of the deck board surface sufficiently that the object may contact the pallet surface.