Replacement Pods for the Lost Vape URSA Multi Kit. One pod holds 6ml of e-liquid and the other holds 7ml of e-liquid. They feature a side fill slot to help prevent leaky messes, and are sold in packs of 1.Â The URSAÂ Pod Tank is only compatible with the Ultra Boost Coils. It isÂ notÂ compatible with the UB Pro Coils. Coils are sold seperately.