Thank you for viewing. This is a handmade sub-mat cover. Size: 85cm (length) x 60cm (width) x 3cm (thickness) Material: Canvas, Nylon The inner mat is not included. Please use it by inserting an bath mat, etc., which are sold at home centers. It can be used in various ways, such as in the gaps between mats, on small rocks or stumps, or for lunchtime. You can sandwich it with your main mat, so it's easy to carry. As this is handmade, we appreciate your understanding.