A good gift starts with a fit they love.

Choose a garment the recipient already wears comfortably, with their permission or help from someone who knows their wardrobe. Match the category you plan to buy: a T-shirt for a tee, a sweatshirt for a crewneck. A stretchy fitted top is a poor reference for a roomy woven-feeling tee, even if both labels say medium.

Notice what they like about it. Is the shoulder relaxed? Does the hem sit near the hip? Is there room for a layer underneath? Write those preferences down before you compare measurements. If you cannot find a reliable reference, asking for measurements is better than turning a surprise into an uncomfortable fit.

Lay the reference piece on a flat surface and smooth it gently. Measure across the chest from armpit to armpit, then measure length using the start and end points shown in the product’s guide. Check sleeves for long-sleeved styles. Keep the tape straight and record the units.

A flat width is one side of the garment, not a body chest measurement. Do not compare a 21-inch garment width directly with a 42-inch body circumference. Use the same measurement method on both sides of your comparison, and read any tolerance note in the chart.

Find the chart measurements closest to the reference garment. If the recipient wants more room, compare against a piece they already wear that way instead of automatically adding one size. Brands and cuts differ; a boxy tee and a fitted tank distribute that room differently.

Finally, check the selected garment, color and size on the product page and again in the bag. Read the made-to-order returns information before buying, especially for a personalized gift. Keep the product’s care directions with the gift so washing follows the garment and print requirements.