What is the bubble on the bottom of my Stagg Double Wall Tasting Glasses/Carafe? – Fellow Products

What is the bubble on the bottom of my Stagg Double Wall Tasting Glasses/Carafe? – Fellow Products

Fellow Products: Stagg Double Wall Glass Coffee Carafe - Unboxing and Review ( Coffee Brewing )

Fellow Stagg Double Wall Carafe 600ml - BeanBurds

Stagg ‎Double Wall Carafe

Fellow Stagg Double Wall Coffee Carafe - Vessel for Pour Over Manual Coffee Maker, Handblown Borosilicate Glass Decanter, 20 oz Clear Pitcher: Coffee Servers

Rubber Bottomed Fellow Stagg Carafe : r/pourover

Fellow Stagg Tasting Glasses for Coffee and Tea Mug - Handblown Borosilicate Glass, Insulated Double Wall For Pour Over Mug, 10 oz (Set of Two): Irish Coffee Glasses

Fellow Stagg Tasting Glasses for Coffee and Tea Mug - Handblown Borosilicate Glass, Insulated Double Wall For Pour Over Mug, 10 oz (Set of Two): Irish Coffee Glasses

Fellow Stagg Double Wall Coffee Carafe - Vessel for Pour Over Manual Coffee Maker, Handblown Borosilicate Glass Decanter, 20 oz Clear Pitcher: Coffee Servers

Fellow Stagg Double Wall Coffee Carafe - Vessel for Pour Over Manual Coffee Maker, Handblown Borosilicate Glass Decanter, 20 oz Clear Pitcher: Coffee Servers