A good wash kit keeps grooming essentials organized without taking up unnecessary space in your luggage. Consider what you typically pack, from toiletries and shaving supplies to smaller grooming tools, and choose a size that gives those items enough room without adding excess bulk. Interior organization and accessibility matter when traveling. Separate compartments or pockets can keep smaller items easy to find, while a wide opening makes it easier to see and reach what you need. Leather also develops a natural patina with use, giving a frequently traveled wash kit more character over time.