TECHNOLOGY FOCUS - POLYMERS - Preferred Sheet: The sheet further comprises antimicrobial agent other than silver salts of zirconium phosphate, heat conducting additive, adhesive layer between the water permeable and the supporting layers.Preferred Materials: The water-permeable material, sheet and/or layer comprises polyvinyl alcohols, polyurethanes, polysulfones, grafted polypropylene, polyamides, biopolymers, microperforated polyolefins and/or moisture permeable voided films. The biopolymer is cellulose (prepared by regeneration from a bath of N-amine oxide fluid), polylactic acid and/or their derivatives. The water insoluble fibers comprise polyvinyl acetates, polyvinyl alcohols, cellulose, rayon, polyesters, aramid, polyamides, polysulfones, copolymers of acrylonitrile butadiene and styrene, polyvinyl chloride, high performance textile fibers, paper and/or epoxy composite. The adhesive layer comprises polyurethane adhesive with optionally an isocyanate-based curing agent optionally diluted with ethyl acetate. The laminating adhesive comprises additive (10-70 wt.% based on total adhesive) consisting of urethane/ethylene oxide copolymer, silica or optionally from coating compositions described in US6294092. The antimicrobial agent is poly(hexamethylenebiguanide) hydrochloride (PHMB).    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Materials: The antimicrobial agent is silver nitrate and/or mixture of titanium dioxide and silver chloride. The heat conducting additive is metal or carbon black powder. The water insoluble fibers comprise inorganic minerals, glass, carbon (optionally metal coated), quartz, silicon carbide, alumina and/or rock wool. EXAMPLE - A laminate was prepared by applying an adhesive (Anglo Surestick 3353 (RTM) which had been diluted with ethyl acetate) between cellulose film (Cellophane 350P00 (RTM: cellulose film) coated with 0.35 % PT788 (RTM) anchor resin) and glass fiber veil. This showed a thickness of 172 microns, a water vapor transmission rate of 232.5 g/m2/day and a good dimensional stability performance.