Polygiene Stays Fresh Technology stops the growth of odor causing bacteria and fungi in the material, which keeps the garment staying fresh and hygienic. WEAR MORE, WASH LESS The requirement for washing this garment is greatly reduced because of it’s ability to stop the growth of odor-causing bacteria. Rather than washing after every training session - you can get a few wears out of each garment and wash less; reducing water usage and saving you time in the laundry. Polygiene® Stays Fresh Technology Multi Directional Stretch Active Breathability Moisture Wicking Antimicrobial Odor Resistant Quick Drying Tommy is wearing S, he is 173cm (5"8") tall with 94cm (37") chest and a 79cm (31") waist. Lucca is wearing L, he is 188cm (6"2") tall with 103cm (40") chest and 84cm (33") waist.