coil beam Air bed pvc materials,comply with EN71,ASTMstandards ... ,or outdoor electric ,easy to inflated and deflated4,Polyester construction with soft suede top provides the look, comfort and ... Home business, Camping use and other outdoor use8,construction:Coil beam,I beam,other beam is available9,Different size air bed has different ... easiest way to deal with chinese manufactory!!!!! coil beam air bed