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.