182T polyester/polyurethane coated. Weight ca. 2.3 kg. Dimension: 200 x 66 x 6 cm. Color: Green/Grey. Use: by opening the valve rolled-up mattress, mattress pulls the pores between the air and is then ready for sleeping. To remain in the air,the valve should be closed. Compression valve and open the pores inthe air from between the rolls, driven out, then close the valve.