The Skylark self-inflating mat offers extra sleeping space and enhanced insulation and comfort. Its classic rectangular shape, combined with soft polyester fabric, ensures a cosy, noise-free night. The Easy Valve System ensures rapid inflation and deflation. Specifications Single 3.0 cm NXT LVL: PFAS-free materials Fabric: 75D 100% polyester Size: 183 x 51 x 3 cm (LxWxH) R-Value: 3.0 (-3°C) Colour: Blue Textile Fibre Composition: Fabric and carry bag 100% polyester Pack size: 29 x 13 cm Weight: 1000 g Single 5.0 cm Fabric: 75D 100% polyester Size: 200 x 60 x 5 cm (LxWxH) R-Value: 5.5 (-22°C) Colour: Blue Textile Fiber Composition: 100% polyester Pack size: 27 x 19 cm Weight: 1710 g Single 10.0 cm Fabric: 75D 100% polyester Size: 200 x 60 x 10 cm (LxWxH) R-Value: 10.5 (-55°C) Colour: Blue Textile Fiber Composition: 100% polyester Pack size: 60 x 21 cm Weight: 2700 g Double 3.0 cm Fabric: 75D 100% polyester Size: 193 x 120 x 3 cm R-Value: 3.0 (-3°C) Textile fibre composition: 100% polyester Pack size: 61 x 19 cm Weight: 2900 g Double 5.0 cm Fabric: 75D 100% polyester Size: 193 x 120 x 5 cm (LxWxH) R-Value: 5.5 (-22°C) Colour: Blue Textile Fiber Composition: 100% polyester Pack size: 63 x 23 cm Weight: 3200 g Double 10.0 cm Fabric: 75D 100% polyester Size: 193 x 120 x 10 cm (LxWxH) R-Value: 10.5 (-55°C) Colour: Blue Textile Fiber Composition: 100% polyester Pack size: 60 x 31 cm Weight: 5300g