Decathlon | Insulating trekking foam folding mattress TREK 100 grey

480 g. 195 x 55 x 2 cm. Foam mattress - the longest groundsheet, versatile andinsulating (R-value 2.2). 10-year guarantee Accordion folding back on itself. **Key benefits:** * Abrasion resistance: Aluminised film which reduces abrasion. * Easy transport: 5 * Easy transport: 480 g. 12.4 litre volume. Accordion folding shape. Elastic support. * Sleeping comfort: Size 195 x 55 x 2 cm. Thick & comfortable with its relief. Thermal insulation. * Thermal insulation: 1 * Thermal insulation: For temperate env. >5°C. Alu. coated layer R-value standard ASTM F3340-18: 2.2 * Easy assembly / dismantling: 5 * Easy assembly / dismantling: Easy accordion folding. Use as a seat, mat, cushion or half-mattress.**Technical information:**Volume and folded size: Folded size 15 x 14 x 55 cm. Elastic support.12.4litre volume. Weight including the pack: 480 g Density of the foam 30kg/m3.Dual-fabric foam. ; Thermal protection and heat: Since the beginning of 2020,a new standard has been validated to assess the level of insulation of yourmattress: standard ASTM F3340-18. This standard measures the capacity of themattress 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 insulating mattress Trek 100 foam: 2.2(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 ; Comfortable posturalsupport: Sleep on aluminised side, facing the sleeping bag with foam side onthe ground to minimise losses of body heat. For a foam mattress, this mattressoffers a greater level of comfort thanks to its design and the depth given tothe foam by the mould. This specific design allows for 2 cm mattressthickness, giving home comfort and real postural support.