For one set : 1 pc is diameter12.5*21cm (1.8L) , 1pc is diameter 11.2*18cm (1.25L), 1pc pump. Material:Silicone, ABS,PS. PS.

For one set : 1 pc  is diameter12.5*21cm (1.8L)  , 1pc is diameter 11.2*18cm (1.25L), 1pc pump.  Material:Silicone, ABS,PS. PS.                                Four airproof layers,in order to keep the vacuum state absolutely and perennially.                                                                                                               Prevents the oxidation.                                                                                                                                                                                                            Prevents moistly.                                                                                                                                                                                                                     Preventing worms.                                                                                                                                                                                                                           Prevented gets moldy and spoi.                                                                                                                                                                                                               Maintaining freshness.