BubbleXXL Ring by Pia Glassworks. This ring is handcrafted with the technique in blown glass. Made of Borosilicate glass. Due to their handcrafted nature, slight variations may occur, adding to the charm and authenticity of each piece. SPLITSize table: SPLIT This item is in stock and will be shipped within 7 working days from Spain. EU shipping: £10 Global shipping: £15