Cold days call for insulation. What makes the Men's L Insulation GORE-TEX jacket even more powerful is that it's wrapped in fully waterproof and highly breathable GORE-TEX 2L. Low profile, low-loft insulation balances warmth and mobility and ample venting designed to prevent overheating. Complete with Zip Tech jacket to pant interface to seal out snow, hidden toggle cinch hood with peripheral adjuster and safety whistle zip pull.