Volven ULTRALIGHT XL Sleeping Mat - Black A lightweight and compact sleeping mat. Ideal for three seasons. R-Value 2.9. Carrying case, repair kit, and mini pump included. Velcro strap for securing the mat when folded. Dimensions: 193 x 63.5 x 3.8 cm. Compressed dimensions: 35 x 17 cm. Weight: 980 g. Product Description: A good night's sleep is essential after a hard day on the trail. If you want to properly recharge, try the Ultralight XL sleeping mat from Volven. This lightweight and damage-resistant mat is made of durable materials and won't let you down in difficult situations. Its rectangular shape and length of 193 cm make it suitable for taller individuals. It's equipped with a leak-proof valve that ensures rapid inflation after unrolling and significantly reduces the risk of air escaping under load, ensuring a great night's sleep and a quick setup and takedown. ASTM stands for American Society for Testing and Materials, which develops and publishes technical standards for various fields, including testing outdoor materials and products. According to the ASTM F3340-18 standard, the Ultralight mat achieved an insulation R-Value of 2.9. Thanks to its thermal insulation, it performs excellently for three seasons, from spring to autumn, effectively protecting you from the cold coming from the ground. & xa0. The cover of the Ultralight XL mat by Volven is made of 75D Honeycomb Polyester. "75D Honeycomb Polyester" is a type of fabric made of 75 denier (75D) polyester. "Denier" is a unit of measurement for fiber strength in fabrics, referring to weight per unit length. Polyester fibers with a tensile strength of 75 denier are relatively strong and durable. Honeycomb is a term for honeycomb. This type of fabric is popular in the production of outdoor equipment, including backpacks, tents, sleeping bags, clothing, and camping mats. It is lightweight, durable, and often used in products intended for outdoor use because it can withstand high temperatures.