The outer jacket is a 3 layer material with O'Neill Hyperdry 10K/10K waterproof/breathability rating. This technology allows the fabric to dry ultra quick and repels water while maintaining breathability and natural softness, but even the best fabric is useless when water finds it's way through the seams. The solution: Fully taped seams! To make the Toaster Jacket durable for whatever the weather, the inner jacket features O'Neill Firewall, a technology which reduces weight, maintains warmth and offers great comfort on cold days.