4 x Skye - double wall glass bistro mugs - Coffee / Tea - 10oz / 300ml - SALE PRICE! One reviewer said: ''... we are blown away!!! These double wall mugs insulate very well and keep coffee and other hot beverages HOT for a long time. We don't use anything else. Highly recommend!'' Handmade by artisans - 4 x double wall borosilicate glass mugs (medium size - 10oz / 300ml) (The same as our '2 x Bistro Double Wall Mugs') Lightweight insulated glass mugs keep drinks hot or cold Capacity: 10oz / 300ml / Height: 4 inches / Width: 3.5 inches Liquids appear to float thanks to the 2 wall layer design