The Only GORE-TEX Waterfowl Wader. The versatile Sitka Delta Zip Wader can be worn across the gamut of waterfowl hunts and features a completely waterproof YKK AQUASEAL® Zipper to allow a simple off-and-on. An updated boot designed by Lacrosse exclusively for the Delta Zip Wader is warm, durable and easily replaced. The shins and knees are reinforced with a rugged foam pad to endure years of abuse breaking ice and busting through the brush. Being 100% serviceable, the Delta Zip Wader is a game-changer for waterfowl hunters across all flyways, climates and conditions.