Swig’s cups, tumblers and bottles rely on the same insulation technology that keeps other stainless steel hydration vessels cold or hot - including vacuum insulation, stainless steel double-walls and copper-coated linings. What makes us stand out from our competitors is our creative and appealing designs. We offer more shapes, sizes and color choices (more than 50!) than anyone else on the market, but what really sets us apart is our insulated stainless steel stemless wine cup – a Swig original creation that took the marketplace by surprise!