Start with your core measurements: chest, waist, and sleeve length. Compare them to the brand’s size chart, since jacket fits vary by line. If you’re between sizes, consider how you plan to wear the jacket (light layers vs. heavier layers) and opt for the larger size to accommodate layering. Always check the garment’s cut—whether it’s regular, slim, or relaxed—as this affects how true to size it will feel.

When between sizes, prioritize comfort over a snug look. Choose the larger size if you plan to layer sweaters or a fleece underneath, or pick the smaller size if you prefer a closer fit for mobility. Check the shoulder and sleeve measurements, as these have the biggest impact on comfort and range of motion. If the brand offers a tall or long-length option, consider it to avoid constricted arms.

Most jackets fall into regular, slim, or relaxed fits. Regular fits provide comfortable wear with space for light layering, while slim fits hug the torso for a streamlined look. Relaxed fits offer more room, ideal for outdoor activities. Be mindful of brand-specific cut variations; some lines may run small or large, so consult the size chart and customer reviews for indications.

Measure from the shoulder seam to the desired hem length and compare with your preference for jacket length. For shoulders, ensure the seam sits at your natural shoulder without pulling. If you’re tall, look for longer sleeves and torso length; if you’re shorter, a cropped or standard length may work better. Visualize layering under the jacket to avoid sleeves that are too short.

Check the retailer’s return policy on jackets, focusing on time window and whether unused, unwashed items are eligible. Keep packaging intact and include any tags. If you’re unsure about fit, order two sizes if allowed and return the one that doesn’t fit, making sure you follow the store’s guidelines to avoid restocking fees.

Follow the care label for washing and drying instructions to preserve fit. Air-drying often helps keep the shape and sleeve length from distorting. If the jacket has odor-control treatments or specialty fabrics, use approved cleaners. Store on a sturdy hanger to maintain shoulder shape and avoid overcrowding in a closet to prevent wrinkles.