Abstract: Included are embodiments for dynamically modeling a human internal pelvic environment for product interactions. Some embodiments include creating a computational simulation of biomechanical interactions between feminine product and a pelvic region for a predetermined body type and simulating dynamic contraction of pelvic floor muscles and movement of surrounding parts of the pelvic region as would be experienced in normal use of the feminine product. Similarly, some embodiments are configured to determine, from the simulation, positional changes and effectiveness of the feminine product, determine whether the feminine product is acceptable, and in response to determining that the feminine product is not acceptable, alter a feature of the feminine product. In some embodiments, in response to determining that the feminine product is acceptable, data related to the feminine product being acceptable may be output.