Which size should I order? Rains products tend to run on the larger size, as they are designed to include room for layering underneath. The exact measurements can be found in our size guide here. Related articles I lost the belt to my Curve Jacket. Can I order a new belt? My size is out of stock – what are my options? What should I do if something in my order is damaged? How do I care for my product? What is water column pressure?