"Knit suit 4-button" is a term likely used to describe a clothing item.; This phrase is used to explain the features and style of a suit or jacket.; Here are the basic terms explaining this phrase: Knit: Knit refers to knitted or woven fabric.; Knit fabrics, which usually have a soft and elastic texture, provide comfort and flexibility in clothing.; ; Suit: A suit is a clothing unit where a jacket and trousers are usually combined in the same fabric and color.; Suits are preferred especially for formal or business wear.; ; 4-Button: The term "4-button" indicates the number of buttons on the front of the jacket.; This may vary depending on the style and design of the jacket.; For example, a 4-button jacket is usually closed with buttons, but only the top two or top three of the upper buttons may be used.; ;