The final piece to your wet weather gear. These boonies are made with an improved three layer windproof, waterproof, breathable material to keep you dry and comfortable no matter what the weather throws at you. The secret is the high quality, environmentally safe Bemis seam tapes. Seam tape is the critical link in the chain of waterproof protection and Bemis is the recognized worldwide technology leader in providing thermoplastic films for a myriad of industrial applications.