Sealskinz Heacham Waterproof Cold Weather Icon Bobble Hat A lightweight, three-layer waterproof bobble hat is comfortable and insulated. Ideal for use every day or adventuring in cold weather conditions. Developed using a three-layer construction this Sealskinz Waterproof Cold Weather Bobble Hat ensures warmth, durability and waterproofing for all-weather wear. Delivering 100% waterproof protection this hat provides the perfect barrier between you and challenging wet weather; so you'll always remain dry and comfortable. The construction is also highly breathable as it allows cool air to flow in and out of the garment creating a perfect microclimate for your skin to thrive in. Within the hat, a microfleece lining sits comfortably against the skin for added comfort, warmth and moisture control whilst an acrylic outer ensures hardwearing stretch.