This is a THERMAREST Z-Lite Sol. Dimensions: 51 x 183 cm Packed dimensions: 51 x 13 x 14 cm Weight: 410g Material: Cross-linked polyethylene Made in USA I purchased this at a local outdoor shop about 4-5 years ago (I don't remember the exact date). I am selling it to clear out some of my belongings. It has been used, but it is in good condition with no noticeable scratches. Please check the photos to assess the condition. Please consider this item if you understand that it is a used product. Thank you. This is a 3-season closed-cell mattress that folds up like an accordion. The Z-Lite Sol has an aluminized surface on one side. Compared to models without aluminum, the insulation is improved by 20%. The folding design allows for quick setup and storage, so you can easily use it for short breaks without any hassle.