Akin to how eight in 10 men regard themselves as above-average drivers, similar self-overestimation exists with packing. However, Scott Mahoney does know how to fill a suitcase better than most. As CEO of Peter Millar, he has access to the company’s entire portfolio of designs and years of business travel has honed his methods. Here are Mahoney’s tips for packing to spend a week in St. Andrews in October.

1. Make sure both your rain jacket and rain pants are seam-sealed, which is a hallmark of well-made and reliable waterproof garments.

2. It’s hard to anticipate every social event. Calf leather slip-on shoes are versatile enough to be dressy or casual.

3. Hybrid or sneaker-like golf shoes give another good option off the course. Shopping, sightseeing, even a stealthy workout in the hotel gym—you’re covered.

4. Reversible vests and jackets multiply your color choices without adding volume to your suitcase.

5. It’s safest to pack a belt in the same matching leather as your dressier shoes.

6. You’ll be surprised how warm and sunny it can get. Bringing both long- and short-sleeve shirts ensures you have enough choices to look and feel great.

7. A soft Italian cashmere sweater is elegant playing golf or at dinner.

8. Quarter- and half-zip pullovers are simply the most handy and functional item.

9. Always bring a blue blazer on a golf trip to an historic place. Its versatility is unmatched.

10. A flannel five-pocket trouser is a smart way of making casual dressy. As a rule, it makes sense to select one or two key colors to enable you to mix and match your outfits. I’ve chosen a blue and grey theme that will provide many options.

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This article was originally published on golfdigest.com