The best recommendation is to start with a base layer that feels good and secure, preferably a tighter fit. Once you have that, you can find a nice mid-layer, light a lighter but water-resistant jacket or vest. Lastly, you’ll add an outer layer, a thicker, comfortable, preferably waterproof option that covers your torso, neck, and head with a securely attached hood. Sometimes you might only need the base layer, but when it’s necessary, you’ll be glad to have the others to fall back on.