The study was conducted with the view of improving the lustiness of the PVC air soles. The formu la containing the ingredients; PVC resin, DOP, DBP, R9, Ivamo l, M BR d id not impart the lustiness on the soles. Hence invention was carried out emp loying the Methocell F50 and Methocell K100. Interestingly the use of Methocell F50 gave the expected results unlike with Methocell K100. Methocell F50 found to reduce the weight of the soles. It was revealed that the reduction in the weight increased

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... he feasibility of the formu lation. Physical evaluations found to give the uniform microcellu lar poly meric network with the co mpactness. On the other hand the use of Methocell K100 found to have increased the size of the soles and that was due to probably expanding the microcellular network of the poly meric nature. Due to this Methocell F50 was concluded for the regular manufacturing of the soles with good lustiness.