"Slim fit" and "regular fit" are stated directly on product listings, not just implied by the photos — worth checking specifically rather than guessing from an image alone.
Quick answer
Several current polo shirts are explicitly labeled Slim Fit, cut closer through the body and arms. Others are labeled Regular Fit, with more room throughout. The fabric also differs: some slim-fit styles use a cotton/polyester/spandex blend for stretch, which matters for how a closer cut actually feels to move in.
What "slim fit" actually changes
A slim fit reduces excess fabric through the chest, waist, and arms compared to a regular cut of the same size. This reads more tailored but leaves less room if you prefer layering underneath or want more ease of movement.
What "regular fit" actually changes
Regular fit keeps more consistent room throughout, which is more forgiving if you're between sizes or prefer a classic, less body-conscious cut.
Why fabric content matters alongside fit label
A slim-fit shirt with some spandex content moves with you more than a slim-fit shirt in 100% cotton or polyester would — check the fabric composition alongside the fit label, since the two together determine how restrictive a closer cut actually feels.
FAQ
Should I size up if I want a slim fit but I'm between sizes?
Sizing up on a slim-fit style still keeps the tailored cut but adds a bit more room — a reasonable middle ground if you're unsure.
Is regular fit the same as "loose"?
No — regular fit is a classic, standard cut, not deliberately oversized. Check individual product descriptions for styles explicitly labeled "Loose Fit" if that's what you want.
The bottom line
Check both the stated fit type and fabric blend before choosing between slim and regular. Browse the Men's Shirts collection to compare current options.