30=(EU 28), 32=(EU 30), 34=(EU 32), 36=(EU 34), 38=(EU 36), 40=(EU 38). If you usually wear size 30, it is recommended that you buy size 32, and so on/Smaller than normal Shorts, one size bigger is recommended. Washing: Machine wash,Hand wash suggestion/Do not bleach Cotton Hand Wash Only, Machine Wash Fastening: Button Cargo Shorts Loose Men's Casual Summer Combat Cotton Twill Cargo Shorts