Foldable air insulating sleeve

The product claims for and drink and food container heat insulation can be to form the air heat insulation sleeve. More specifically, the foldable air heat insulation cover keeping cup, a making the air maintaining and cup. To claims temperature control and enough heat insulation improved, is convenient to the user holding stably hand for and cup, further provided with a stopping or the condensation of the cup the inner sides of the excessive number of heat create. Because of non-installments' base boss the edge of they are corresponding to the small, and then the air heat insulation sleeved to said with multiple air in the cup base, and therefore is better heat insulation effect. Further enables cup is provided with a better stability of with the large base. When the support rod capable through to reinforce the fixed on the sleeve and preventing comprising a user a to make the inner tank. The sleeve is further connected, a making part of heat insulation of cup. The printing material can also fixed to a foldable an air heat preservation device of outer surface is through and is equal advertisements or goals. A foldable part and heat preservation device of implementation carrying further - comprising lids, is further enhance heat-insulated.