Decathlon | Self-inflating Trekking Mattress - TREK 500 L - grey

Sleep soundly under the stars with the Forclaz Trek 500 L self-inflatingtrekking mattress. This comfortable and compact mattress features an R-Valueof 2.7 for excellent thermal insulation, protecting you from cold ground. Itsanti-slip pads prevent your sleeping bag from sliding, ensuring a peacefulnight's rest on any adventure. **Key benefits:** * Easy transport: 3 * Easy transport: Weighs 820g. Volume: 7 litres. Ø 17.5 cm x 33 cm. Carry bag. * Sleeping comfort: 2 * Sleeping comfort: Dimensions 180 x 52 x 3 cm. Thermal insulation. Adjustable comfort. * Warmth: 3 * Warmth: 2 to 3 seasons of use (>5°). R-Value standard ASTM F3340-18: 2,7 * Easy assembly / dismantling: 4 * Easy assembly / dismantling: Self-inflating. Efficient two-way valve with anti-return for easy handling. * Traction: true * Traction: Anti-slip silicon pads. Limits slippage of the sleeping bag.**Technical information:**The principle of a self-inflating mattress: A self-inflating mattress consistsof an airtight envelope glued to an open cell foam in which the aircirculates. When you unfold the mattress, it will return to its original shapeand thickness (3 cm for the trek 500 mattress) and fill with air accordingly.However, it requires some mouth inflation so you can adjust it to the pressurelevel suitable for you. Self-inflation is more or less noticeable depending onthe thickness of the mattress. ; Easy inflation/deflation: When using yourmattress for the first time, unroll it, open the valve for 24 hours on a flatsurface, then inflate it and leave it for 24 hours, valve closed, underpressure. Then you can store it away again. While trekking, take out andunroll your mattress as soon as you set up camp, valve open to facilitate pre-inflation. A self-inflating mattress inflates to about 60 to 70% on its own.You will need to blow up the rest yourself, so you can adjust the pressure toyour desired comfort level. ; Thermal protection and heat: Since the beginningof 2020, a new standard has been validated to assess the level of insulationof your mattress: standard ASTM F3340-18. This standard measures the capacityof the mattress to retain or return body heat in order to avoid its loss andtherefore provide you with thermal comfort. Thermal insulation thanks to thefoam. R-Value standard ASTM F3340-18 mattress Trek 500 self-inflating: 2.7(measured by an independent laboratory) ; Thermal properties and warmth (2):The R-value expresses the thermal performance and resistance of the mattress.The higher the R-Value, the more the mattress insulates you from the coldground. \- R-value from 0 to 1.9: mattress designed for use in warm season(summer) only \- from 2 to 3: mattress design for use in 2 or 3 seasons(spring/summer/autumn) \- from 3 to 4: 4 season mattress, winter use possible\- higher than 4.5: winter use and extreme conditions ; Product Test: Thesleep comfort, also called "postural comfort", of our mattresses is defined byour R&D centre. All our mattresses are subjected to mechanical tests to assesstheir performance and durability and ensure you enjoy a good night's sleep andan excellent recovery. We also carry out numerous field tests in real-lifeconditions. Postural comfort is an extremely personal thing. You can adjustthe pressure of your mattress.