Luigi Bormiolo produce beautiful Italian crafted drinkware and the Optica range brings together the retro look from the 1920â€™s with a new age style of glasses. The 300ml Optica Cocktail Glass is designed and made in Italy from lead-free crystal glass. The glass features a ribbed design and is ideal for a range of cocktails. Created with Luigi Bormioli's proprietary SON.hyx to strengthen and keep glass brilliant and created with their proprietary Titanium Reinforced permanent treatment to increase stem strength and durability. This product is not recommended to be washed in a dishwasher and handwashing is recommended.