A Web-based, computer-driven health and welfare benefit system that groups employees into Eligibility Groups, limits available Business Rules to those available on a centrally authored pick list, allows disparate data files to be imported and offers flexible tools for employees to build customized internet interfaces for benefit management. 1 to 1,000 \u03bcm and is elastic, wherein the silicone rubber is an organopolysiloxane having a polyoxyalkylene group, contains an oxyethylene unit represented by the formula \u2014OCH2CH2\u2014 in an amount of 20 to 80 mass %, and can absorb water in an amount of 10 parts by mass or more relative to 100 parts by mass of the silicone rubber. A barcode reader and a display are in communication with the processor. Such zones are conventionally delineated through the application of various indirect methods such as hydro-geomorphological, geological and geophysical, which many times are time consuming and uneconomical. and 95% rh, and an intermediate layer of hygroscopic resin construction having a moisture content less than 1000 ppm.