Lot of 2 Pyrex 10 Oz. 300 ml Clear Custard Cups Ramekins #464, Straight Edge eBay Starbucks Coffee Carabiner Mugs 1TO10REVIEWS SOLD rare find! Indiana Glass mugs from the Tiara collection in Black Diamond Point pattern. these are solid black and heavy with a textured spike surface. made in the 1970s by Science Pop Quiz! , Both mugs hold exactly the same amount of hot coffee (300ml) and start at the same temperature. The only difference is their shape., Which one will cool down faster?, Drop Hydro Flask 32 oz. Wide Mouth Insulated Travel Bottle w Flex Straw Cap Kittery Trading Post