Made from fda approved food grade silicone, lightweight, portable and dishwasher safe, swepp are the perfect stemmed glasses for all indoor and outdoor festive gatherings. These durable wine glasses are also safe for use from -20 to +110°C (-4 to+230°F) - ideal for all your holiday fun! Designed for cozy Christmas gatherings, festive outdoor parties, New Year's celebrations and more, swepp are the ultimate stylish and sustainable outdoor wine glasses to celebrate the season.