I'd had positive experiences with Ex Officio clothing and was preparing for a hot-weather trip so decided to give these a go. According to the Ex Officio chart I am definitely a large but I sized up to an XL and that fit perfectly. Fabric is cool, soft and comfy though I don't find it especially moisture-wicking. They do dry quickly. Unfortunately, my preferred brand of panty liner (Always) absolutely will not stick to this fabric, a big drawback for me. Suspect I can do better for the price, but that would have taken research I didn't have time for. Glad I bought just one pair. Looking for a replacement for Barely There briefs, which I bought in large quantities (since the perfect underwear always seems to get discontinued, and sure enough those were) for at most half the price of Ex Officio. The search continues.