Ultra-rugged, insulated, french press coffee maker The vacuum-insulated GSI Glacier Stainless Java Press is made of high-grade 18/8 stainless steel and is built to last for years to come.. Vacuum-insulated, double-wall carafe and pour-through lid provide amazing heat retention to keep your coffee hotter longer. Silicone ring plunger design virtually eliminates coffee ‘blow-by’ for the most flavorful, mud-free coffee or tea. Durable Glacier Stainless steel body and stable, non-slip foot for years of reliable coffee in the outdoors. Sturdy, molded handle provides a secure hold while pressing or pouring. Glacier Stainless: When it comes to durable, lightweight kitchenware, thousands of Boy Scouts can’t be wrong. If you need kitchenware that can take a beating and keep on cooking, Glacier Stainless is for you. Each piece is made of high-grade 18/8 stainless steel and built to last for years to come. Materials.