Slim Fit

Slim fit cuts the garment with only 2 to 4 inches of ease at the chest, ease being the extra cloth beyond your actual body measurement. Sleeves narrow, the waist pulls inward, and trousers stay close through the thigh. Athletic variants keep that trim waist but add width across the chest and upper back, because a lifter's build breaks a standard slim between the shoulder blades.

On the body a slim cut draws one continuous line from shoulder to hem. Tailoring and dress shirts read sharpest in it. Tucked, it leaves almost no blousing at the waist, so shirts stay smooth under a jacket. Movement depends on precision. Raise both arms in the fitting room and confirm the hem lifts less than an inch. A cut this close rides up when the sleeves are set too high for you.

The trade-off is tolerance. Half a size of drift shows immediately, either as pull lines radiating from the buttons or as collapse folds at the waist. Layering underneath is limited to a thin tee, and a 5 pound weight change reaches the fit before it reaches the mirror. Buy slim only where you can try the exact size, and expect to replace it sooner than roomier cuts as your body changes.