Consisting of a waterproof shell and an insulting interior jacket, the 686 Spellbound 3-in-1 Jacket answers all the questions winter can ask. The outer shell relies on an InfiDry 2L laminate and critically sealed seams to keep us dry, while the inner jacket combines lofty InfiLOFT insulation with fleece sleeves to keep us warm and free from sweat. Wear them together or separate depending on the weather.