Builtin Double Air Chamber PumpThis inflatable mattress with builtin double air pump has been proven for many years making it easier and faster to use The double air chambers work simultaneously and it only takes 2 minutes to inflate and deflate effectively reducing leakage and inflationdeflation time The size after inflation is 75 x 39 x 18 Unique Internal StructureThis air mattress twin adopts an internal coil beam structure with dozens of internal air coils providing strong support and comfort from head to toe The maximum loadbearing capacity of Zearna 18 twin air mattress is 550 lbs which can bring you ultimate comfort and support Thickened Highquality MaterialsThe Zearna blow up mattress adopts multilayer soft top flocking which is not only soft to the touch waterproof and odorresistant but also easy to clean punctureresistant and wearresistant The air mattress is reinforced with multilayer punctureresistant PVC material to provide stability for the antislip strips on the bottom reduce noise and prevent tipping or sliding Ultimate User ExperienceThe Zearna air mattress comes with a convenient storage bag that can be neatly put into the cabinet and will not be conspicuous until needed It can be quickly installed for overnight guests and is always ready for use In addition all Zearna air mattresses come with a repair kit for easy repairs in case of accidental punctures or tears Customer SupportWe are committed to highquality products and excellent service If you have any questions or need help please contact our support team and we will provide you with a timely and satisfactory solution